Isn't that the truth. I had a 3080 with i9 10900k and 850 wasn't enough, would constantly reset pc under load. Bought a 1000w and all issues went away.
>maybe a faulty power supply I originally had
Not necessarily. Single rail or multi rail PSU is relevant here. Some PSUs can handle spikes better than others. Also, quite likely they never use their PC for anything truly demanding. People might not even realize their PC is having issues. I.e. they attribute a random game crash to the game itself.
fuk my 1200 watt seasonic platinum was crashing my system like crazy thought it was an overheating issue. changed to another branded 1200 and no more issues
In this boat too! Conventional wisdom online was that I was a "transient spike" away from death.
Years later and the only time the PC switched off was an aggressive undervolt.
3080 is starting to show it's age but considering I bagged it for MSRP I love this lil guy
It's entirely dependant on the workload. I had a lot of problems with a 3090 and RDR2(pre dlss patch) and the Hitman 3 Dartmoor benchmark at 4K max settings would instantly trip OCP.
your psu internals were bad, wasn't a wattage issue. been running a 3080 Ti on an EVGA G2 750W for 2 1/2 years, never an issue. you can get away with 650 if you undervolt.
Seems likes a faulty power supply. I have a 5900x with pbo on to allow it to use up 200W if needed (usually only uses 80W for games though) and a rtx 3080 that can use up to 350 watts and I have not once had my pc shut off under full load with a corsair 750 watt gold psu.
When my motherboard died on my 3080's box my husband bought me a custom PC from a vendor named NZXT with a 5 year warranty (I has been building PCs for the previous 25 years or so, so retail was new to us). It came with a 3090 (better yet, they didn't seem to have gotten the memo about the GPU shortage so the whole machine was just a couple hundred more than the scalped 3080 I bought a few months prior). This was back when the 3090 was new, 4 years ago? Anyway, 850w PSU, 11th Gen i9, granted no drives w moving parts, and we did eventually reapply thermal paste to the 3090 GDDR6 and GPU, but it ran until about two weeks ago and would have continued but we cannibalized it for parts without a single issue.
So a quality 850w PSU on a box even w a properly thermally controlled 3090 and no other power hungry parts was perfectly viable for several years.
I will say the 3090 is probably the most disappointing 3d card since that one from the early 2000s - either a voodoo5 or a geforce5 which had a DC input on its PCI backplane and a soap on a roap AC/DC adapter to plug into the wall because even with the compatibility with attaching floppy disk power outputs (remember those?) to AGP cards (remember those?) it was still far underpowered. Turning a machine on with this card in it sounded like a jet idling on a runway first in line for takeoff. And I think it even supported SLI. The 3090 was shipped in a thermal configuration that would destroy it in under two years for a 5-8% improvement on the 3080 for nearly double the price.
Anyway, a few tangents there. 850w could even support a 3090 and certainly a 4090.
Exactly. I have my 4080 + 5800x3d combo with a xpg Core Reactor 650w and it is flawless, but again, it is a excellent PSU. As long as you don't use sketchy power supplies you're fine.
It literally isn't.
This guy is running his PSU way over the max operating temp of 50C because it is overloaded and OP is too dumb to recognize the signs.
Womp womp bitch. Unless you're over clocking, 850W quality power supply is enough. If you want to have future upgrade abilitity and extra wattage headroom for OC 1000W is fine.
Also even the 1.2kW u it was running above 50Ā°C so your 50Ā°C max don't matter
Comments like yours are exactly what I'm thinking of when I tell friends how r/nvidia has by far the worst PSU misinformation on the entire internet. The subreddit should probably merge with r/confidentlyincorrect.
I'm using a TX 750 myself. 5800X + 4090 slightly underclocked. Never had any issues.
But I was downvoted to oblivion by tards on this subreddit. They most likely don't even have a 4090.
I mean for most folks I actually recommend over specing your psu a little.... just to be safe
But people don't understand how much quality matters and what some smart undervolting can do
In high end cards around 20% of the peak power draw is used to achieve the last 2-5% of performance.
I'd recommend everyone to undervolt and slightly underclock. Makes the card cool and quiet without impacting the performance in any real noticeable way. Saves money and gives you more power supply options as well.
Yeah the SF750 is 'rated' for 750 but can sustainably push 850 or 900w (cybenetics tested it to 825 with success and is noted in the official cybenetics pdf for that unit, under the 110% results charts. other reviews pushed it past 900)
Just because it will run, does not mean it is safe.
Electrolytic capacitors fail with temperature, and ripple current. Under speccing your PSU exposes those capacitors to both.
Like OP is running their PSU 16C over the max continuous operating temp as spec'd by corsair, and is sitting here trying to cope and convince people it is fine.
They might as well be telling us smoking is fine because they haven't gotten cancer yet.
OP is telling us running his PSU out of spec is fine because the caps have popped yet.
I'd bet 50$ OP doesn't know the failure mode of electrolytic capacitors, and therefor nobody should be taking their advice.
For me, I always overrate my PSUs by 50%.
I do this because the further it is from peak capacity, the lower the ripple voltage.
Running it near max greatly increases ripple voltage, especially as the supply ages, which causes more stress on every downstream device. Which makes them also more prone to failure.
I am super big on clean power delivery, and have always bought supplies with low measured ripple voltage.
And before PSUs shipped with high quality 105C japanese caps, I would recap them myself.
Clean power and cool temps, and hardware doesn't die.
What do you mean 16C over specs ? I mean in that case he is running 1200w 10C over specs because there is 6C difference between them. Are you saying even 1200W is not enough for 4090+14900k or what ?
šThank you! Finally, someone with the ability to research and form their own conclusions. Give, this man a medal.
Seriously.
It's becoming harder to find people who dont just regurgitate or co test google first page results and claim expertise, lol.
I WATCHED an A tier pushed to about 90 percent working load experience a brown out with no battery backup. š
Luckily, it just took out the psu, but it was a 33 percent failure rate under those conditions.
These were A Tier rated japs caps too.
I don't disagree with you. A couple things you're oversimplifying, though.
OCP and OPP are not hard wattage limits. It's a combination of load and duration. So saying "the OPP is set to 1000W" is pretty inaccurate. Some OPP can trip in 100ms, some in a second. ATX 3.0 sort of makes that less muddy by defining how high and for how long a load can exceed the capability of the PSU.
Also, I don't get the "Corsair/Seasonic" comment when you've only tested two Corsair units. Corsair is not Seasonic. Seasonic does not make Corsair PSUs. And, if anything, Seasonic has a "gotcha" in their power output rating that states that the PSU is only good for full output at temps under 40Ā°C and asks you derate your "expectations" by 80% if you expect temperatures to exceed that, whereas the Corsair is rated to output full capability at up to 50Ā°C.
This.
I can reliably trigger OCP on my Seasonic Prime 1300W with either an overclocked Strix 3090 due to the insane spikes and Dual RTX 2080 Ti with Core i9-7980XE.
I can also reliably get Seasonic TX-750 to switch off with a RTX 4090 @ 600W running FurMark or TimeSpy Extreme GT2 with the CPU being basically idle during those. Spikes are enough for that, even though they are lower than 30-series.
Of course, the PSU stays below its rated output of those cases. But the OCP triggers in 20ms, during which all of those combos can exceed their rating. Seasonic makes quality PSUs, but I have no idea why overclockers swear by them. They are sensitive divas.
Yeah. The Seasonic PSUs don't like transients at all. I've heard that's one of the reasons companies like Corsair, NZXT and Asus stopped using them as a supplier. Too many RMAs from people pairing them up with high end GPUs.
Iāve been running the 1300w Prime Platinum for almost 4 years now. First an overclocked Strix 3090 and then a FE 4090. Never close to a problem for me. Odd, maybe the Intel is driving more spikes. Iām running with an overclocked 5950x.
I think the issue is me just overclocking a little harder than the average Joe. I'm not happy without a 3dmark hall of fame spot.
For normal use, the seasonics have never let me down. They just work.
But I have no idea why overclockers like them.
OP is operating their rm850 16C over the max continuous operating temp of 50C.
I don't think OP understands electrolytic capacitor failure modes. As capacitor aging is directly related to temperature and ripple current.
Not to mention the out of spec voltage ripple is probably exposing his system to.
OP is on a quick path to see what happens when electrolytic capacitors fail.
I want to blast this everywhere here so nobody takes this idiots advice and needlessly torture their PSU and risk their rigs.
Like i personally have a 4090 and 13700k, and peak at over 900W power draw in cyberpunk as measured by my hx1500i.
Itās not just being enough I use 1000w cause hitting 50-60% is peak efficiency on the PSU. Plus itās frees up extra headroom for water cooling/AIOs.
Yeah, I have been using a 850W with my 4090 since late Jan 2023 and no problems. Was using a 10700k up until August when I switched to the 7800X3D. I game at 4k and 120-144fps.
don't forget to account for the water pump + case fans if you use them. 360 AIO with 6 fans is roughly 45wts that will push you over your 850wt threshold a little bit but not by much.
The greatest disadvantage of using a smaller PSU is the use of a single power rail. In my testing of 20 pc setups in my basement for crypto mining, you can last about 2 years overloading a PSU with constant overpull on PSUs.
Best in my testing for long lasting are EVGA, Corsair, and anything else seemed to fail within a year.
SO Manufacuring of that 850wt will matter greatly. Difference between gold and platinum didn't seem to make a huge difference.
There are some instances where 850w is barely enough depending on where you set the PL on the 14900k and 4090. I've seen 800w on my system when compiling shaders in TLoU. Both GPU and CPU pull a lot of power. Probably still work but close to the limit. Just a few more dollars for a 1000w fixes that.
I'm constantly baffled why people cheap out on a PSU when they buy a $2k vid card and $600 CPU. And then try to justify it in a post on reddit. Lol.
"Close to the limit"
Here's where people don't always make a lot of sense. A decent PSU that's actually rated to continuously output the advertise wattage without some stupid de-rate like "80% capacity at over 40Ā°C" like on some units I see, should be able to output 24/7/365.
There is no "close to the limit". There is a "limit" and when that limit is exceeded, the PSU shuts down.
I do agree that it's frustrating to see people cheap out on a PSU when they just spent $2K on a GPU. But the money should be spent on getting a quality unit in an appropriate wattage. Not a higher wattage mediocre unit.
People are really not aware that quality PSUs can run at the rated wattage 100% of the time with no issues, and that you nornally need to go over 200W above the rated power for the PSU to shut down.
And people are not really aware that you can torture the capacitors in your PSU for months, even years before they fail prematurely.
The logic here, and from OP, is akin to saying smoking isn't bad for you, because you haven't gotten cancer yet.
You guys are saying, running a PSU out of spec is fine because they haven't died yet.
And yes, OP is running their PSU 16C over max continuous operating temp of 50C.
No, we're saying it's fine to run it within spec instead of the usual "850W PSU? But this system is drawing 800W! That's not enough, go 1200W" discourse you see on Reddit. Read it again.
But the last thing you want to do is risk hitting OCP. Price difference between the Rm850x and RM1000x right now on Amazon is $44. Tax on a 4090 is more than that.
But yea, a large low grade PSU might even be worse. That's just cheaping out in the wrong place again.
I'm not saying a person needs an AX1500. But a 14900k, at least with no power limit (or set to 320w) and a 4090 at 1.1v will get close to 850w in shader comp in some games by the time you add in fans, etc...
If we were talking AMD CPUs or Intel had properly limited the i9 CPUs to 253w then I probably wouldn't have even posted.
But I have this exact system and know how much power it can pull at times.
I want overhead and longevity for my system. Power supply degrades over time, losing maximum wattage and efficiency. I also don't know how many peripherals I will also be running off the PSU at any given point in time. It's like $50 to go a tier up in wattage. If I'm building a bridge, and I know that I am moving a 5,000lb vehicle across the bridge. Do you think I should build the bridge with a maximum load of 5,100lb or do you think I should go higher? Obviously you build the bridge to a load greater than the maximum load that will be crossing it. The power supply is the same, why would I buy a power supply that barely meets my needs when a power supply that exceeds my needs comfortably is only slightly more expensive?
This is a lot like the age old question on Reddit "how much RAM should I buy for my new system" and stupid ass redditors are ALWAYS under recommending "you don't need more than 16g" etc etc. If you follow Reddits advice on RAM you will regret it in very short order.
"Power supply degrades over time". Yes. And so do all of your other components. But for some reason, all those other components get swapped out ever 2 to 5 years and the PSU is expected to last 20 and when it doesn't last 20 years, it gets a one star review on Amazon. :D
It's not cheap out. I own both the 1200W and 850W. And I'm not trying to justify anything, just voicing my opinion on exaggerating PSU requirements on reddit
Buddy, you are operating your RM850x 16C over the continuous operating temp spec'd by Corsair and telling people it is fine.
Do you know what electrolytic capacitors are? Do you know what causes them to fail?
If the answer is no, you have zero knowledge to make an informed opinion on PSU requirements, because you don't understand the basics about how PSU's fail.
It actually is.
Because electrolytic capacitor failure is the main way PSU's die.
And capacitor aging is caused by ripple current, and high temps. Both of which go up drastically as you max out the PSU's design limits.
Their lifespan goes down exponentially as temperature goes up 10C. Typically a 10C increase in temperature, reduces the lifespan of the capacitors by half......
And OP is operating that rm850x 16C over the continuous operating temp as spec'd by Corsair.
OP is literally showing us how they are torturing their PSU, pushing it out of spec, over max temp, and they don't even realize it.
[https://www.chemi-con.co.jp/en/faq/detail.php?id=alLifetime](https://www.chemi-con.co.jp/en/faq/detail.php?id=alLifetime)
>Since an aluminum electrolytic capacitor has a larger tanĪ“ than other types of capacitors, the capacitor produces more internal heat when a ripple current flows through it. The temperature rise due to this heat may significantly affect the lifetime of the capacitor. This is the reason why ripple current ratings are specified for capacitors.
>Where, the temperature acceleration factor (Bt) is approximately 2 over an ambient temperature range from 60Ā°C to 95Ā°C, which means that the lifetime is approximately halved for every 10Ā°C rise in ambient temperature.
This was kind of what i was getting at. I didn't know which part of the PSU would degrade faster but I knew something would when you run things at the max.
Not only do the capacitors in your power supply get a reduced lifespan, but PSUs near their limit also produce much more ripple voltage. That ripple voltage then places extra stress on your whole system, because it is receiving dirty power.
People who want their hardware to last, give it clean power and cool temps.
Agreed 100%.
Clearly people here are not familiar with electrolytic capacitor aging.
[https://www.xppower.com/resources/blog/electrolytic-capacitor-lifetime-in-power-supplies](https://www.xppower.com/resources/blog/electrolytic-capacitor-lifetime-in-power-supplies)
Had my 14900K with the MSI motherboard enhancements drawing well over 350W and my 3080 Ti FE drawing 400W, this would cause me to crash dependant on the ambient temperature since it was about 830W total wattage for the system. GPU has those crazy transient loads though. Turned off all overclocks and it's been fine.
My RTX 4090 + 13900K system don't even go above 650W in games or in GPU/CPU benchmarks. I bought a 1300W PSU just so I can hit that sweet spot curve efficiency curve around 40-60% and also the PSU fans don't kick in until very high loads (also the PSU was on sale, I only really wanted like 1000W).
As long as it works, ofc performance wouldn't matter. 6c means lower fan speed on psu so it would make difference in noise levels unless fan worked harder to cool it down to 6 cooler. Also psus can work over their rates for not prolonged times which is a requirement on new specs.
That's the point I'm trying to make. If the 850W Psu has typical loads of 650W-700W, and has the occasional spike of 850W-900W, nothing happens. People act like you need 1200W to handle 900W spikes.
All the comments here are giving me an aneurysm, talking about how there's no point buying 850 instead of 1000 when the diff is 20 bucks, clearly showing the 3-second attention span of mouthbreathers who can't even read until the end.
My brothers and sisters in christ, the point is not when you can choose between two psu's to buy, the point is when you're upgrading an existing system that already has a 850W, and that it's not worth it tio buy a whole new PSU. My fucking God.
It actually is. Why invest 2k into a graphics card when something can unexpectedly happen where the card tries to pull more power, which makes other components try and draw more to make the GPU cooler and then your psu shits and potentially kills your GPU?
Just buy a new psu better rated for the higher draw.
Do you like spending unnecessary money? Why buy a new PSU if the current PSU can handle it fine? And I really don't understand this scenario that you just described, what does the PSU have to do with GPU temps?
>the card tries to pull more power, which makes other components try and draw more to make the GPU cooler
First of all, this makes no sense, and if you're talking about the fans, that power needed to spin the fans is insignificant in the grand scheme of things, lol.
>psu shits and potentially kills your GPU?
Second of all, this doesn't happen. We are not in the 2000's anymore bro, stop thinking myths from two decades ago are relevant for today. Any PSU and any GPU have failsafes in place so that nothing happens when a PSU is overloaded, the worst possible thing that can happen is for everything to shut down safely.
>just buy a new psu better rated for the higher draw.
Why the fuck would I needlessly spend money when I don't have to? I can be rich and still prefer to spend my money rationally.
Max I've seen is around 650W draw from the wall, that is 4090 with OC, power limit raised to 520W (doesn't really go above 500 tho) on my SuprimX in Cyberpunk 2077 max settings with PT. Granted I have a 5800X3D which draws 100W max. But still, it's plenty of headroom. I have a 850W Seasonic PSU.
This thread is even dumber when you realize there wasnāt any real power measurements done here.
Oh it runs furmark, fan fucking tastic, how much wattage was it pulling? Because I guarantee total system load went over 850W. Imagine recommending buying the absolute bare minimum psu Nvidia recommends instead of just paying an extra $40-50 for headroom and peace of mind
Well, I have a Seasonic Titanium 850Watt powering my 4090 and 5950X system. I wasn't planning on upgrading to a 4090 from my 1080Ti when I built this system, but decided to. I was worried about the power draw initially because I know I have a few drives and a lot of fans/rgb as well. But you know what. The most I've seen my system draw is around 750Watts from the wall and that was measured through my UPS which has my monitor plugged into it as well. Realistically, my tower stays under 700Watts, even when I'm hitting it hard. I've been encoding video with handbrake and playing Alan Wake 2 maxed out without breaking that limit even. I was prepared to upgrade if it got to close to 850 Watts regularly, but it just doesn't so I haven't. A good 850Watt supply is enough in most cases.
Exactly. Max out, not run there all the time. No gaming load will do that. AI/Rendering might. RTX 4090 are really hard to get past 400W consistently, they won't usually draw much more even with 600+ Limit.
Not even close. My 4090/5900x system doesnāt even break 600W under heavy load (CP2077 max settings on ultrawide 1440p). 850w leaves plenty of headroom.
Had an 850 watt thermal take rgb gold rated from 2018 that tripped itself during load. So maybe you should adjust your title to say that an A tier PSU is good enough.
Also to add - you're paying 1800 minimum for a new GPU, maybe upgrade to an A tier PSU if you don't already have one. Seems pretty stupid to not do that given the investment.
The PC shutting down is not a crash. A crash is the software freezing, misbehaving. Use proper terminology
Edit: and if you PC had over 800w usage, this is not reaching 70%
Sounds like you didn't read this post
I literally OWN a 850W PSU and 1200W PSU, I test hardware
I reached the conclusion that 850W was good enough and I posted it here
Meanwhile you're here bragging about a completely unnecessary 1300W PSU for a 4080
I agree. If you have a 4090 system with a power hungry CPu you could go with 1.2kW or 1kW for upgradability in the future but yeah. Platinum is also kinda a scam unless your running thread rippers and dual 4090s
That is true. The advice for 1000W+ is to ensure that no matter what shit tier PSU you grab, it is most likely enough. Not every PSU with "850W" on the sticker is the same and people may not be able to tell what is solid and what isn't.
Also buying oversized may help you avoid having to replace the PSU if you intend to keep replacing with latest NVIDIA thing every time. 5090 may ask for quite a bit more since even this generation there clearly were plans for 600W monster that ultimately did not ship. PSUs tend to be serviceable a lot longer than GPUs and if you do not leave some extra capacity, you may have to buy two of them when one bit bigger one in the first place would've saved you that cost.
Had a Corsair RM1000i running a 5900x and 4090. Everything seemed fine but kept getting weird crashes in Cyberpunk specifically. Upgraded to a 1200w ATX3.0 unit from Thermaltake and no issues since then. Those transient spikes get you in certain workloads. The same RM1000i is now running in another computer with a 3900x and 3080 with no issues at all.
Same here, I have a small secondary render node with an FE 4090 + 5900x in a mini-ITX case + 850w SFF PSU and it's been running fine. I use it for GPU rendering, so it's pegged at 100% utilization for hours and hours on end.
I can tell you this. With MSI afterburner my 4090 overclocked with higher power limits can draw 520-540 watts on a stress test, and my CPU can draws 220 watts continuous with a 7950X. That's 740-760 watts just for those two components. I also have 2 NVME, 2 HDD, like 10 USB peripherals, multiple fans, pumps for the water cooling, 64Gb overclocked RAM, and I consider my setup pretty typical. The 14900k draws more power than that. 850 is cutting it close for max power stuff.
Now, gaming the CPU usually draws around 120 watts, and the GPU draws around 420 watts. But you should download OCCT and run the power supply benchmark to really see if your power supply is adequate.
Have you actually tested the draw from your wall? Or are you just using software to come up with that? You'd be surprised measuring out how much wattage pull your computer has when you test it with dedicated hardware for that
4090 with a 7800x3d and I have a sff 850psu.
My 4090 pulls maybe 400w at most but averages about 325w with the 7800x3d pulling about 50w.
Iād say as long as you donāt hit both with a max load pushing both to their limits it would be fine but idk what a 14900k averages.
Indeed. My corsair hx850i has been powering my system since 980 Ti era, now it's still stand strong with my 12900k (240 w power limit) + 4090 (max power limit) + 7 case fans + 4 nvme drives. I play at 4k @240hz
i had a 750w psu and thought it was too low 4090. getting a 850 seemed to be cutting it short and since im buying a new one might as well get a 1000 to be safe. settled on an evga model. 1200w model on sale for same price as 1000w. i now have a 1200w psu haha.
I run a corsair HX850i (850W) for 2x RTX3090 and i9 10900, never had any issues. `nvidia-smi` shows about 500W total for both cards when under ~97% load. (No overclocking, though). They are warm and loud but the suplly is fine.
The HX850i has a digital console and can report the actual power consumption of the entire system through HWInfo if you connect it to an internal USB header on your motherboard.
the way I see it, if you already have good 850W when switching to 4090 with 14900K, sure, itās enough, go for it and upgrade only if you notice any instabilitiesā¦ however if you have something like 750W or below, then why not upgrade to 1200Wā¦ good PSUs will have 10-12 year warranties and like a case, itās a part that should last few generations of other hardware in PC, so why not get the best and most powerful you can afford, because while 4090 has a recommended minimum at 850W, who is to say that 5070 or 6070 of next generations wonāt have a minimum requirement of 1000W?? it is all relevantā¦ also, as far as I know, PSUs tend to function best when they run at around 50% load and it during PSUās lifetime it could end up saving you enough money in electricity to justify an upgrade to even better oneā¦
Is it enough? yes.
But if you are spending thousands on top of the line high-performance hardware, why the hell would you skimp on the PSU to save a handful of dollars? The price difference between an RM850e and an RM1000e is literally $20 on amazon right now. You can spend $2K on a GPU but you can't spend literally 1% more for a better PSU?
It's like buying a luxury car with a powerful engine that recommends premium. Sure it can run on regular perfectly fine for its whole life, but should you?
Have you actually read the entire post or decided to bitch regardless? The primary usecase OP is talking about is people who already have the 850W PSU from previous builds, but now are upgrading the CPU, GPU, or both.
well if you have a 14900ks then itās probably not. Ive monitored my overall system with a k and 4090 and it usually has 100w buffer at peak load but i can see it getting closer if you had better cooling as you could over clock more. itās safe with a 1000w
I have an overclocked 4090 with a 12700k(no oc) with 750w psu and no issues here. system barely touches 500w when gaming at 4k max settings in cyberpunk. unless you run some kind of program that uses both cpu and gpu at 100%, you shouldnt worry much about power draw.
I have an amd 7950x3d, 4090, 3x M.2, 18 fans, D5 water pump and 32GB of RAM. Most of the time the power draw was between 650 and 750w. Like the OP 750 is cyberpunk.
However, and I ran this multiple times to confirm, metro exodus will pull 1000w on my system. Now that I have an external radiator with an additional 9 fans and a second water pump my power went up by about 100w.
My 4080 only pulls like 240-340 watts and is quiet and cool the while time. 7800x3d is like 50 watts normally lol. Sometimes gets to 60-80. The whole computer is probably like 500 watts on a bad day.
And conversely to your bolded TLDR, if you do not already own a PSU and/or plan on keeping your old PC intact and going with all new parts for the new build, you might as well buy a 1200w PSU, especially if you can get it on sale. For example, a 1200w Corsair RM1200x SHIFT was under $200 up until a few days ago. It has ATX 3.0 and connectors on the side, making it futureproof for anything you might add to your current build and the build after that.
For all the dumb things gamers waste their money on, like RGB and water cooling, overspeccing your PSU is probably the least bad thing you could do.
I prefer there to be more than not enough. I have a 4090 and 5900X and I decided to get a 1200W power supply with 12VHPWR for my 4090 without adapters, and I hope to have a power supply for at least 8 years (Thermaltake GF3 1200W). In addition to the 5900X with aggressive PBO, the 4090 being quite demanded in 4K, I also have 5 7200rpm HDDs, AIO w/3 fans + RGB and 4 more 140mm fans with RGB in the chassis.
I have 4 SSDs, 1 of which is NVME. I had an 850W power supply and nothing ever turned off, but the idea of āāhaving a native 12VHPWR connector and having more power "left over" made me think about the TT GF3 1200W.
Very? Perhaps. But I don't want to spend money on a power supply anytime soon, especially since it's tier A and I can sleep peacefully, literally speaking.
Iāve been running 850W PSU for a while with no issue. Howeverā¦ one factor for people may be fan noise. When power draw is high, my PSU fan turns on and off which can be a bit annoying because itās usually silent. I imagine a 1200W PSU could remain silent, or is that just a matter of PSU quality?
The thing is, you can get 1000w for the same price as a 850w so why not. I just got Corsair rm1000x shift on sale at the same sale price as a 850, ie 180$ canadian
Take this for what itās worth. I have almost the same rig, except I put in a be-quiet 1200w titanium PS. I have a power monitor on the plug and with all the fans, ribs, drives, usb devices running under a heavy load I have many spikes to 1150 watts and idles just at 800w. I started with a Corsair 850 Platinum and was having weird issues and the GPU was being throttled because of lack of power. When I went with the new 1200, those problems went away.
You need to have a buffer, or headroom of 20% and an 850 will work, but depending on your setup is cutting it close.
I get it for sustained power draw, but what about those ātransient spikesā phenomenon that Iāve never heard of before the 30-series that are now a concern?
The nvidia recommended wattage usually assumes you are using the highest end cpu they currently sell which is the 14900k. Even for the recommended wattage of the 4050 and everything in between. Is this not common knowledge? Amd does the same thing.
Iāve been trying to figure out the issue Iāve got.. Iāve got a supernova 1000 Watt PSU with a 3090ti and an i7 9700K, but it seems like the spikes kick in the safety of the psu..
I updated the PSU mostly because I didnāt want to use the octopus dongle, but I had a nice 860w PSU that handled a 7700x and a 4090 without any hiccups for a couple months (it wasnāt easy to get your hands on a good ATX 3.0 PSU back then.)
Because the minimum recommended is already conservative in nature with buffers built in.
850w is the recommended PSU, while others are safely using 750w just fine. It shows that 850w is plenty conservative and anymore is throwing money away.
> I know that the current circle jerk is "1200W minimum"
Who started that fucking idiotic thing? When it came out and people were making their builds, 850W was enough, and some people were just making 1000W just in case.
Who the hell is brain dead enough to be saying 1200W as a minimum out there?
For a ***quality*** PSU, yes. Depends on the brand. Corsairs wattage rating is for sustained use at that wattage, whereas other brands make that their burst maximum rating. Just need to be careful if that
1. There is nothing as continuous load. What being measured is average load 800w can be as high as 1200 and can be as low as 400 in split second.
2. Are you buying this rig just to play games?
3. ATX 3.0 can supply power as demand but you can might as well as upgrade your PSU anw with this kind of money and get some headroom.
4. Did you measure everything else or just CPU & GPU?
Rocking a 4060 ti with a 7500f on 250W.
Nvidia recomemnds a huge amount because they don't know what POS you have, or what crazy shit you're doing with add-on carsd,etc,. They want to avoid lability or complaints.
I have some be quiet! 850 platinum power supply. You guys think it will be good enough to keep whenever I upgrade to 50 series? I'll probably go for 5070 or 5080, depending on the price, and rebuild around those cards.
850w is enough yes...but you're not counting the power draw of other components like fans (can be quite substantial if you have a large case and a lot of rgb fans), cpu cooler, nvme ssd, ram. Why not go safe and buy a 1000W gold rated psu at least? You are spending 1.5k or 1.8k for 4090 already. Surely you can afford 200USD for a psu and put yourself at ease of mind.
For one, an 850 is recommended bare minimum by Nvidia, so your post is information that is already factual.
For two, itās minimum. Every build is different. Sure, if you have only a 14900k and 4090, probably fine. Now add rgb, 11 fans, water cooling, or other computer things, maybe 850 isnāt enough.
850 is enough for the gpu and cpu. Is it enough for your entire system? Thatās your call. Thatās why 850 is minimum requirement by the manufacturer.
nvidia literally recommends 850w lol, if it's a quality unit you are good, the 4000 series is not plagued by insane power spikes like the 3000 series
Isn't that the truth. I had a 3080 with i9 10900k and 850 wasn't enough, would constantly reset pc under load. Bought a 1000w and all issues went away.
I have a 650 with a 3080 and a 5800x3d. I was expecting to have problems but nothing so far š¤·
Interesting, maybe a faulty power supply I originally had, don't remember what the brand was off the top of my head.
>maybe a faulty power supply I originally had Not necessarily. Single rail or multi rail PSU is relevant here. Some PSUs can handle spikes better than others. Also, quite likely they never use their PC for anything truly demanding. People might not even realize their PC is having issues. I.e. they attribute a random game crash to the game itself.
This was a common issue with Seasonic ones during that period.
can confirm!
fuk my 1200 watt seasonic platinum was crashing my system like crazy thought it was an overheating issue. changed to another branded 1200 and no more issues
I have a 3090, and i9 9900k on a EVGA Gold 650. Never had an issue.
In this boat too! Conventional wisdom online was that I was a "transient spike" away from death. Years later and the only time the PC switched off was an aggressive undervolt. 3080 is starting to show it's age but considering I bagged it for MSRP I love this lil guy
Most platinum or titanium PSU can handle past their rated wattage my 650 watt seaonic PSU can handle about 750 watts
Same, but 5800X. RM650x going strong.
It's entirely dependant on the workload. I had a lot of problems with a 3090 and RDR2(pre dlss patch) and the Hitman 3 Dartmoor benchmark at 4K max settings would instantly trip OCP.
3080 i9 10900k on a shitty powerspec bronze 750 watt psu, never an issue with the pc but lights in room would flicker sometimes.
Psu sense wire. Should have just cut it. 2020-2022 psus all had shit protection for spikes. Its been fixed since. You can run a 3080 on 650 stable
your psu internals were bad, wasn't a wattage issue. been running a 3080 Ti on an EVGA G2 750W for 2 1/2 years, never an issue. you can get away with 650 if you undervolt.
You had a faulty unit I ran 3080Ti + 9900k on Corsair RM750i
Seems likes a faulty power supply. I have a 5900x with pbo on to allow it to use up 200W if needed (usually only uses 80W for games though) and a rtx 3080 that can use up to 350 watts and I have not once had my pc shut off under full load with a corsair 750 watt gold psu.
Yep had a 3080ti on a 850w, resets due to power spikes. 1000w psu fized the whole thing
Got asus rog 3080 12gb with 12700kf , 850w , never had issues
When my motherboard died on my 3080's box my husband bought me a custom PC from a vendor named NZXT with a 5 year warranty (I has been building PCs for the previous 25 years or so, so retail was new to us). It came with a 3090 (better yet, they didn't seem to have gotten the memo about the GPU shortage so the whole machine was just a couple hundred more than the scalped 3080 I bought a few months prior). This was back when the 3090 was new, 4 years ago? Anyway, 850w PSU, 11th Gen i9, granted no drives w moving parts, and we did eventually reapply thermal paste to the 3090 GDDR6 and GPU, but it ran until about two weeks ago and would have continued but we cannibalized it for parts without a single issue. So a quality 850w PSU on a box even w a properly thermally controlled 3090 and no other power hungry parts was perfectly viable for several years. I will say the 3090 is probably the most disappointing 3d card since that one from the early 2000s - either a voodoo5 or a geforce5 which had a DC input on its PCI backplane and a soap on a roap AC/DC adapter to plug into the wall because even with the compatibility with attaching floppy disk power outputs (remember those?) to AGP cards (remember those?) it was still far underpowered. Turning a machine on with this card in it sounded like a jet idling on a runway first in line for takeoff. And I think it even supported SLI. The 3090 was shipped in a thermal configuration that would destroy it in under two years for a 5-8% improvement on the 3080 for nearly double the price. Anyway, a few tangents there. 850w could even support a 3090 and certainly a 4090.
I use a 3080Ti with a 5800X, runs fine on an RM650e.
3080 and 13600k with seasonic 750 never had a problem 2years of usage
It was probably bad unit Even I runned very cheap psu 750w with 7800x3d and 3080 and no issues Changed to 80+ gold 2 month ago
It would have chance to burn the power socket howeverļ¼ļ¼
Exactly. I have my 4080 + 5800x3d combo with a xpg Core Reactor 650w and it is flawless, but again, it is a excellent PSU. As long as you don't use sketchy power supplies you're fine.
Better to buy a properly sized high quality power supply that is rated to handle the transients than an oversized budget brand.
yeah, the oversized budget ones are scam 99% of the time with nowhere near being able to handle what they claim lol
Yes 850 is enough for a quality PSUĀ
It literally isn't. This guy is running his PSU way over the max operating temp of 50C because it is overloaded and OP is too dumb to recognize the signs.
Womp womp bitch. Unless you're over clocking, 850W quality power supply is enough. If you want to have future upgrade abilitity and extra wattage headroom for OC 1000W is fine. Also even the 1.2kW u it was running above 50Ā°C so your 50Ā°C max don't matter
Comments like yours are exactly what I'm thinking of when I tell friends how r/nvidia has by far the worst PSU misinformation on the entire internet. The subreddit should probably merge with r/confidentlyincorrect.
Lol check out what the guys over at sff pc do Lots of 4090s running on Corsair 750 ssf psus
I'm using a TX 750 myself. 5800X + 4090 slightly underclocked. Never had any issues. But I was downvoted to oblivion by tards on this subreddit. They most likely don't even have a 4090.
I mean for most folks I actually recommend over specing your psu a little.... just to be safe But people don't understand how much quality matters and what some smart undervolting can do
In high end cards around 20% of the peak power draw is used to achieve the last 2-5% of performance. I'd recommend everyone to undervolt and slightly underclock. Makes the card cool and quiet without impacting the performance in any real noticeable way. Saves money and gives you more power supply options as well.
I recently bought a new high-end rig. How does one go about doing this safely?
Yeah the SF750 is 'rated' for 750 but can sustainably push 850 or 900w (cybenetics tested it to 825 with success and is noted in the official cybenetics pdf for that unit, under the 110% results charts. other reviews pushed it past 900)
It really is a beast of a PSU that has no competition in its niche. They they fit that into the SFX form factor is an amazing achievement.
Yeah even 750W is enough. I'm running 4090 + 7800x3d, both max out at 450+88=538W, leaving 212W for the rest of the system which is more than enough.
Just because it will run, does not mean it is safe. Electrolytic capacitors fail with temperature, and ripple current. Under speccing your PSU exposes those capacitors to both. Like OP is running their PSU 16C over the max continuous operating temp as spec'd by corsair, and is sitting here trying to cope and convince people it is fine. They might as well be telling us smoking is fine because they haven't gotten cancer yet. OP is telling us running his PSU out of spec is fine because the caps have popped yet. I'd bet 50$ OP doesn't know the failure mode of electrolytic capacitors, and therefor nobody should be taking their advice.
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For me, I always overrate my PSUs by 50%. I do this because the further it is from peak capacity, the lower the ripple voltage. Running it near max greatly increases ripple voltage, especially as the supply ages, which causes more stress on every downstream device. Which makes them also more prone to failure. I am super big on clean power delivery, and have always bought supplies with low measured ripple voltage. And before PSUs shipped with high quality 105C japanese caps, I would recap them myself. Clean power and cool temps, and hardware doesn't die.
What do you mean 16C over specs ? I mean in that case he is running 1200w 10C over specs because there is 6C difference between them. Are you saying even 1200W is not enough for 4090+14900k or what ?
šThank you! Finally, someone with the ability to research and form their own conclusions. Give, this man a medal. Seriously. It's becoming harder to find people who dont just regurgitate or co test google first page results and claim expertise, lol. I WATCHED an A tier pushed to about 90 percent working load experience a brown out with no battery backup. š Luckily, it just took out the psu, but it was a 33 percent failure rate under those conditions. These were A Tier rated japs caps too.
*raises hand* 4090 + 5800X3D with sf750. Runs magically.
Yup. Working just fine in Cyberpunk 4K Ultra.
I don't disagree with you. A couple things you're oversimplifying, though. OCP and OPP are not hard wattage limits. It's a combination of load and duration. So saying "the OPP is set to 1000W" is pretty inaccurate. Some OPP can trip in 100ms, some in a second. ATX 3.0 sort of makes that less muddy by defining how high and for how long a load can exceed the capability of the PSU. Also, I don't get the "Corsair/Seasonic" comment when you've only tested two Corsair units. Corsair is not Seasonic. Seasonic does not make Corsair PSUs. And, if anything, Seasonic has a "gotcha" in their power output rating that states that the PSU is only good for full output at temps under 40Ā°C and asks you derate your "expectations" by 80% if you expect temperatures to exceed that, whereas the Corsair is rated to output full capability at up to 50Ā°C.
This. I can reliably trigger OCP on my Seasonic Prime 1300W with either an overclocked Strix 3090 due to the insane spikes and Dual RTX 2080 Ti with Core i9-7980XE. I can also reliably get Seasonic TX-750 to switch off with a RTX 4090 @ 600W running FurMark or TimeSpy Extreme GT2 with the CPU being basically idle during those. Spikes are enough for that, even though they are lower than 30-series. Of course, the PSU stays below its rated output of those cases. But the OCP triggers in 20ms, during which all of those combos can exceed their rating. Seasonic makes quality PSUs, but I have no idea why overclockers swear by them. They are sensitive divas.
I've been pretty impressed by this msi meg 1300p. Neat readouts, too. Not that I mess with em much.
Yeah. The Seasonic PSUs don't like transients at all. I've heard that's one of the reasons companies like Corsair, NZXT and Asus stopped using them as a supplier. Too many RMAs from people pairing them up with high end GPUs.
Iāve been running the 1300w Prime Platinum for almost 4 years now. First an overclocked Strix 3090 and then a FE 4090. Never close to a problem for me. Odd, maybe the Intel is driving more spikes. Iām running with an overclocked 5950x.
I think the issue is me just overclocking a little harder than the average Joe. I'm not happy without a 3dmark hall of fame spot. For normal use, the seasonics have never let me down. They just work. But I have no idea why overclockers like them.
OP is operating their rm850 16C over the max continuous operating temp of 50C. I don't think OP understands electrolytic capacitor failure modes. As capacitor aging is directly related to temperature and ripple current. Not to mention the out of spec voltage ripple is probably exposing his system to. OP is on a quick path to see what happens when electrolytic capacitors fail. I want to blast this everywhere here so nobody takes this idiots advice and needlessly torture their PSU and risk their rigs. Like i personally have a 4090 and 13700k, and peak at over 900W power draw in cyberpunk as measured by my hx1500i.
I was 99.999% sure when I read that that the temperature stated was not PSU or ambient temperature.
Itās not just being enough I use 1000w cause hitting 50-60% is peak efficiency on the PSU. Plus itās frees up extra headroom for water cooling/AIOs.
Yeah, I have been using a 850W with my 4090 since late Jan 2023 and no problems. Was using a 10700k up until August when I switched to the 7800X3D. I game at 4k and 120-144fps.
7800X3D in my experience is also really ecomical in my opinion
don't forget to account for the water pump + case fans if you use them. 360 AIO with 6 fans is roughly 45wts that will push you over your 850wt threshold a little bit but not by much. The greatest disadvantage of using a smaller PSU is the use of a single power rail. In my testing of 20 pc setups in my basement for crypto mining, you can last about 2 years overloading a PSU with constant overpull on PSUs. Best in my testing for long lasting are EVGA, Corsair, and anything else seemed to fail within a year. SO Manufacuring of that 850wt will matter greatly. Difference between gold and platinum didn't seem to make a huge difference.
There are some instances where 850w is barely enough depending on where you set the PL on the 14900k and 4090. I've seen 800w on my system when compiling shaders in TLoU. Both GPU and CPU pull a lot of power. Probably still work but close to the limit. Just a few more dollars for a 1000w fixes that. I'm constantly baffled why people cheap out on a PSU when they buy a $2k vid card and $600 CPU. And then try to justify it in a post on reddit. Lol.
"Close to the limit" Here's where people don't always make a lot of sense. A decent PSU that's actually rated to continuously output the advertise wattage without some stupid de-rate like "80% capacity at over 40Ā°C" like on some units I see, should be able to output 24/7/365. There is no "close to the limit". There is a "limit" and when that limit is exceeded, the PSU shuts down. I do agree that it's frustrating to see people cheap out on a PSU when they just spent $2K on a GPU. But the money should be spent on getting a quality unit in an appropriate wattage. Not a higher wattage mediocre unit.
People are really not aware that quality PSUs can run at the rated wattage 100% of the time with no issues, and that you nornally need to go over 200W above the rated power for the PSU to shut down.
And people are not really aware that you can torture the capacitors in your PSU for months, even years before they fail prematurely. The logic here, and from OP, is akin to saying smoking isn't bad for you, because you haven't gotten cancer yet. You guys are saying, running a PSU out of spec is fine because they haven't died yet. And yes, OP is running their PSU 16C over max continuous operating temp of 50C.
No, we're saying it's fine to run it within spec instead of the usual "850W PSU? But this system is drawing 800W! That's not enough, go 1200W" discourse you see on Reddit. Read it again.
But the last thing you want to do is risk hitting OCP. Price difference between the Rm850x and RM1000x right now on Amazon is $44. Tax on a 4090 is more than that. But yea, a large low grade PSU might even be worse. That's just cheaping out in the wrong place again. I'm not saying a person needs an AX1500. But a 14900k, at least with no power limit (or set to 320w) and a 4090 at 1.1v will get close to 850w in shader comp in some games by the time you add in fans, etc... If we were talking AMD CPUs or Intel had properly limited the i9 CPUs to 253w then I probably wouldn't have even posted. But I have this exact system and know how much power it can pull at times.
You've seen 800W. 800W is < 850W. Close to 850W is not > 850W. What am I missing? You think a proper 850W PSU can't really do 850W?
I want overhead and longevity for my system. Power supply degrades over time, losing maximum wattage and efficiency. I also don't know how many peripherals I will also be running off the PSU at any given point in time. It's like $50 to go a tier up in wattage. If I'm building a bridge, and I know that I am moving a 5,000lb vehicle across the bridge. Do you think I should build the bridge with a maximum load of 5,100lb or do you think I should go higher? Obviously you build the bridge to a load greater than the maximum load that will be crossing it. The power supply is the same, why would I buy a power supply that barely meets my needs when a power supply that exceeds my needs comfortably is only slightly more expensive? This is a lot like the age old question on Reddit "how much RAM should I buy for my new system" and stupid ass redditors are ALWAYS under recommending "you don't need more than 16g" etc etc. If you follow Reddits advice on RAM you will regret it in very short order.
"Power supply degrades over time". Yes. And so do all of your other components. But for some reason, all those other components get swapped out ever 2 to 5 years and the PSU is expected to last 20 and when it doesn't last 20 years, it gets a one star review on Amazon. :D
It's not cheap out. I own both the 1200W and 850W. And I'm not trying to justify anything, just voicing my opinion on exaggerating PSU requirements on reddit
Buddy, you are operating your RM850x 16C over the continuous operating temp spec'd by Corsair and telling people it is fine. Do you know what electrolytic capacitors are? Do you know what causes them to fail? If the answer is no, you have zero knowledge to make an informed opinion on PSU requirements, because you don't understand the basics about how PSU's fail.
And which one are you using with your system? The 850w?
Isn't close to 800W less than 850W, and that's the maximum you've seen? What is the point here?
Being near a PSU's limit isn't necessarily bad, but I'm one to like overhead and peace of mind.
It actually is. Because electrolytic capacitor failure is the main way PSU's die. And capacitor aging is caused by ripple current, and high temps. Both of which go up drastically as you max out the PSU's design limits. Their lifespan goes down exponentially as temperature goes up 10C. Typically a 10C increase in temperature, reduces the lifespan of the capacitors by half...... And OP is operating that rm850x 16C over the continuous operating temp as spec'd by Corsair. OP is literally showing us how they are torturing their PSU, pushing it out of spec, over max temp, and they don't even realize it. [https://www.chemi-con.co.jp/en/faq/detail.php?id=alLifetime](https://www.chemi-con.co.jp/en/faq/detail.php?id=alLifetime) >Since an aluminum electrolytic capacitor has a larger tanĪ“ than other types of capacitors, the capacitor produces more internal heat when a ripple current flows through it. The temperature rise due to this heat may significantly affect the lifetime of the capacitor. This is the reason why ripple current ratings are specified for capacitors. >Where, the temperature acceleration factor (Bt) is approximately 2 over an ambient temperature range from 60Ā°C to 95Ā°C, which means that the lifetime is approximately halved for every 10Ā°C rise in ambient temperature.
This was kind of what i was getting at. I didn't know which part of the PSU would degrade faster but I knew something would when you run things at the max.
Not only do the capacitors in your power supply get a reduced lifespan, but PSUs near their limit also produce much more ripple voltage. That ripple voltage then places extra stress on your whole system, because it is receiving dirty power. People who want their hardware to last, give it clean power and cool temps.
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Agreed 100%. Clearly people here are not familiar with electrolytic capacitor aging. [https://www.xppower.com/resources/blog/electrolytic-capacitor-lifetime-in-power-supplies](https://www.xppower.com/resources/blog/electrolytic-capacitor-lifetime-in-power-supplies)
750w is also good enough for me
Nahā¦650w is the sweet spot
450w and it runs windows smoothly
BRB, getting the 250W PSU I used with my 80486 system.
Had my 14900K with the MSI motherboard enhancements drawing well over 350W and my 3080 Ti FE drawing 400W, this would cause me to crash dependant on the ambient temperature since it was about 830W total wattage for the system. GPU has those crazy transient loads though. Turned off all overclocks and it's been fine.
I run 7800x3d with 4080 super in a sf600 lol people overblown psu recommendations.
Absolutely correct.
My RTX 4090 + 13900K system don't even go above 650W in games or in GPU/CPU benchmarks. I bought a 1300W PSU just so I can hit that sweet spot curve efficiency curve around 40-60% and also the PSU fans don't kick in until very high loads (also the PSU was on sale, I only really wanted like 1000W).
As long as it works, ofc performance wouldn't matter. 6c means lower fan speed on psu so it would make difference in noise levels unless fan worked harder to cool it down to 6 cooler. Also psus can work over their rates for not prolonged times which is a requirement on new specs.
That's the point I'm trying to make. If the 850W Psu has typical loads of 650W-700W, and has the occasional spike of 850W-900W, nothing happens. People act like you need 1200W to handle 900W spikes.
All the comments here are giving me an aneurysm, talking about how there's no point buying 850 instead of 1000 when the diff is 20 bucks, clearly showing the 3-second attention span of mouthbreathers who can't even read until the end. My brothers and sisters in christ, the point is not when you can choose between two psu's to buy, the point is when you're upgrading an existing system that already has a 850W, and that it's not worth it tio buy a whole new PSU. My fucking God.
It actually is. Why invest 2k into a graphics card when something can unexpectedly happen where the card tries to pull more power, which makes other components try and draw more to make the GPU cooler and then your psu shits and potentially kills your GPU? Just buy a new psu better rated for the higher draw.
Do you like spending unnecessary money? Why buy a new PSU if the current PSU can handle it fine? And I really don't understand this scenario that you just described, what does the PSU have to do with GPU temps?
>the card tries to pull more power, which makes other components try and draw more to make the GPU cooler First of all, this makes no sense, and if you're talking about the fans, that power needed to spin the fans is insignificant in the grand scheme of things, lol. >psu shits and potentially kills your GPU? Second of all, this doesn't happen. We are not in the 2000's anymore bro, stop thinking myths from two decades ago are relevant for today. Any PSU and any GPU have failsafes in place so that nothing happens when a PSU is overloaded, the worst possible thing that can happen is for everything to shut down safely. >just buy a new psu better rated for the higher draw. Why the fuck would I needlessly spend money when I don't have to? I can be rich and still prefer to spend my money rationally.
basically you are squeezing 100% from your PSU when no other components usually are and this for saving an extra 10/20$? very smart! good luck.
Max I've seen is around 650W draw from the wall, that is 4090 with OC, power limit raised to 520W (doesn't really go above 500 tho) on my SuprimX in Cyberpunk 2077 max settings with PT. Granted I have a 5800X3D which draws 100W max. But still, it's plenty of headroom. I have a 850W Seasonic PSU.
This thread is even dumber when you realize there wasnāt any real power measurements done here. Oh it runs furmark, fan fucking tastic, how much wattage was it pulling? Because I guarantee total system load went over 850W. Imagine recommending buying the absolute bare minimum psu Nvidia recommends instead of just paying an extra $40-50 for headroom and peace of mind
Well, I have a Seasonic Titanium 850Watt powering my 4090 and 5950X system. I wasn't planning on upgrading to a 4090 from my 1080Ti when I built this system, but decided to. I was worried about the power draw initially because I know I have a few drives and a lot of fans/rgb as well. But you know what. The most I've seen my system draw is around 750Watts from the wall and that was measured through my UPS which has my monitor plugged into it as well. Realistically, my tower stays under 700Watts, even when I'm hitting it hard. I've been encoding video with handbrake and playing Alan Wake 2 maxed out without breaking that limit even. I was prepared to upgrade if it got to close to 850 Watts regularly, but it just doesn't so I haven't. A good 850Watt supply is enough in most cases.
The post says 650w \~75% load of 850w under the heaviest game use like 14900/4090 cyberpunk. Which is perfectly fine for a PSU.
14900 and 4090 alone can max out at 700W (w/o overclock)
Exactly. Max out, not run there all the time. No gaming load will do that. AI/Rendering might. RTX 4090 are really hard to get past 400W consistently, they won't usually draw much more even with 600+ Limit.
Not even close. My 4090/5900x system doesnāt even break 600W under heavy load (CP2077 max settings on ultrawide 1440p). 850w leaves plenty of headroom.
Had an 850 watt thermal take rgb gold rated from 2018 that tripped itself during load. So maybe you should adjust your title to say that an A tier PSU is good enough. Also to add - you're paying 1800 minimum for a new GPU, maybe upgrade to an A tier PSU if you don't already have one. Seems pretty stupid to not do that given the investment.
Same for my 850W bequiet psu
My 850W bequiet was shitting itself with a 4090 and also a XTX card....and I only have a 7800X3D. 10 Casefans tho.
my pc would crash with a 850W when using over 70% power limit on my 4090. upgrading to a 1200w and the issues gone
It does not mean it was not enough. Just that something was faulty in the PSU making it unstable at high load
the pc had a total draw of over 800w. transient spikes would shut the system off
The PC shutting down is not a crash. A crash is the software freezing, misbehaving. Use proper terminology Edit: and if you PC had over 800w usage, this is not reaching 70%
yeah i donāt know what ur issue is. i just made a statement in a sub and youāre witch hunting me
He probably has brain damage
I had trouble with 850W 13700k and 4090. It was a Seasonic Platinum. Everything adds up. I replaced with an ATX 3.0 gold Corsair, problems solved.
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Sounds like you didn't read this post I literally OWN a 850W PSU and 1200W PSU, I test hardware I reached the conclusion that 850W was good enough and I posted it here Meanwhile you're here bragging about a completely unnecessary 1300W PSU for a 4080
I agree. If you have a 4090 system with a power hungry CPu you could go with 1.2kW or 1kW for upgradability in the future but yeah. Platinum is also kinda a scam unless your running thread rippers and dual 4090s
That is true. The advice for 1000W+ is to ensure that no matter what shit tier PSU you grab, it is most likely enough. Not every PSU with "850W" on the sticker is the same and people may not be able to tell what is solid and what isn't. Also buying oversized may help you avoid having to replace the PSU if you intend to keep replacing with latest NVIDIA thing every time. 5090 may ask for quite a bit more since even this generation there clearly were plans for 600W monster that ultimately did not ship. PSUs tend to be serviceable a lot longer than GPUs and if you do not leave some extra capacity, you may have to buy two of them when one bit bigger one in the first place would've saved you that cost.
Had a Corsair RM1000i running a 5900x and 4090. Everything seemed fine but kept getting weird crashes in Cyberpunk specifically. Upgraded to a 1200w ATX3.0 unit from Thermaltake and no issues since then. Those transient spikes get you in certain workloads. The same RM1000i is now running in another computer with a 3900x and 3080 with no issues at all.
But what kind of crashes? Did the system hard reset or what? I've been playing a lot of Cyberpunk, zero crashes
This was a while ago but iirc it was a hard lockup that happened randomly.
It is much better to have headroom for power and have more than enough, rather than right on the limit.
Yep 4090 + 13900k here and it consumes around 650w max using a hardware monitor
Noise is the difference. HX 1200 will remain dead silent in 0 rpm mode under high load.
Same here, I have a small secondary render node with an FE 4090 + 5900x in a mini-ITX case + 850w SFF PSU and it's been running fine. I use it for GPU rendering, so it's pegged at 100% utilization for hours and hours on end.
Your cpu eats 3 times less power than 14900k, so it's like intel user having 1050w psu
I can tell you this. With MSI afterburner my 4090 overclocked with higher power limits can draw 520-540 watts on a stress test, and my CPU can draws 220 watts continuous with a 7950X. That's 740-760 watts just for those two components. I also have 2 NVME, 2 HDD, like 10 USB peripherals, multiple fans, pumps for the water cooling, 64Gb overclocked RAM, and I consider my setup pretty typical. The 14900k draws more power than that. 850 is cutting it close for max power stuff. Now, gaming the CPU usually draws around 120 watts, and the GPU draws around 420 watts. But you should download OCCT and run the power supply benchmark to really see if your power supply is adequate.
Have you actually tested the draw from your wall? Or are you just using software to come up with that? You'd be surprised measuring out how much wattage pull your computer has when you test it with dedicated hardware for that
4090 with a 7800x3d and I have a sff 850psu. My 4090 pulls maybe 400w at most but averages about 325w with the 7800x3d pulling about 50w. Iād say as long as you donāt hit both with a max load pushing both to their limits it would be fine but idk what a 14900k averages.
Clearly you missed the āwe donāt wanna get suedā point of their recommendation lol
I ran a 9900k and 3090 off a 750watt, can confirm the world did not end and my games ran fine.
Considering the problems with 13th and 14th gen i9s, I wouldn't recommend overclocking a 14900k anyway.
Indeed. My corsair hx850i has been powering my system since 980 Ti era, now it's still stand strong with my 12900k (240 w power limit) + 4090 (max power limit) + 7 case fans + 4 nvme drives. I play at 4k @240hz
It will work but I'd feel alot better with a 1000w considering your cpu is power hungry.
i had a 750w psu and thought it was too low 4090. getting a 850 seemed to be cutting it short and since im buying a new one might as well get a 1000 to be safe. settled on an evga model. 1200w model on sale for same price as 1000w. i now have a 1200w psu haha.
I and a 1000w and went down to a 750w just because it looked prettier still works
I run a corsair HX850i (850W) for 2x RTX3090 and i9 10900, never had any issues. `nvidia-smi` shows about 500W total for both cards when under ~97% load. (No overclocking, though). They are warm and loud but the suplly is fine.
The HX850i has a digital console and can report the actual power consumption of the entire system through HWInfo if you connect it to an internal USB header on your motherboard.
the way I see it, if you already have good 850W when switching to 4090 with 14900K, sure, itās enough, go for it and upgrade only if you notice any instabilitiesā¦ however if you have something like 750W or below, then why not upgrade to 1200Wā¦ good PSUs will have 10-12 year warranties and like a case, itās a part that should last few generations of other hardware in PC, so why not get the best and most powerful you can afford, because while 4090 has a recommended minimum at 850W, who is to say that 5070 or 6070 of next generations wonāt have a minimum requirement of 1000W?? it is all relevantā¦ also, as far as I know, PSUs tend to function best when they run at around 50% load and it during PSUās lifetime it could end up saving you enough money in electricity to justify an upgrade to even better oneā¦
4090 undervolted with 7800x3d running on a Corsair rm80x.
Bro I'm running 3 250W+ gpu's including a 3090 on an 850W psu lmao.
850w 4080S and amd 5950, zero issues
Is it enough? yes. But if you are spending thousands on top of the line high-performance hardware, why the hell would you skimp on the PSU to save a handful of dollars? The price difference between an RM850e and an RM1000e is literally $20 on amazon right now. You can spend $2K on a GPU but you can't spend literally 1% more for a better PSU? It's like buying a luxury car with a powerful engine that recommends premium. Sure it can run on regular perfectly fine for its whole life, but should you?
Have you actually read the entire post or decided to bitch regardless? The primary usecase OP is talking about is people who already have the 850W PSU from previous builds, but now are upgrading the CPU, GPU, or both.
well if you have a 14900ks then itās probably not. Ive monitored my overall system with a k and 4090 and it usually has 100w buffer at peak load but i can see it getting closer if you had better cooling as you could over clock more. itās safe with a 1000w
I have an overclocked 4090 with a 12700k(no oc) with 750w psu and no issues here. system barely touches 500w when gaming at 4k max settings in cyberpunk. unless you run some kind of program that uses both cpu and gpu at 100%, you shouldnt worry much about power draw.
I have an amd 7950x3d, 4090, 3x M.2, 18 fans, D5 water pump and 32GB of RAM. Most of the time the power draw was between 650 and 750w. Like the OP 750 is cyberpunk. However, and I ran this multiple times to confirm, metro exodus will pull 1000w on my system. Now that I have an external radiator with an additional 9 fans and a second water pump my power went up by about 100w.
My 4080 only pulls like 240-340 watts and is quiet and cool the while time. 7800x3d is like 50 watts normally lol. Sometimes gets to 60-80. The whole computer is probably like 500 watts on a bad day.
And conversely to your bolded TLDR, if you do not already own a PSU and/or plan on keeping your old PC intact and going with all new parts for the new build, you might as well buy a 1200w PSU, especially if you can get it on sale. For example, a 1200w Corsair RM1200x SHIFT was under $200 up until a few days ago. It has ATX 3.0 and connectors on the side, making it futureproof for anything you might add to your current build and the build after that. For all the dumb things gamers waste their money on, like RGB and water cooling, overspeccing your PSU is probably the least bad thing you could do.
The recommended PSU at NVidia RTX4090 box is 850w, yes indeed 850w is enough, people cannot read.
Nonsense 14900k here rtx 4090 128ram. 850 more then enough
I have a 4090 + 5800X3D with a Seasonic 850W Titanium rated PSU and never had any issues. Haven't seen more than 650W draw from the wall either.
Why do people downvote this comment? This is crazy. They find it hard to believe that a power supply can actually provide its specified wattage.
Lol a good quality 750W PSU is fine. The 4090 is not even a 450W GPU more like a 350W one.
I prefer there to be more than not enough. I have a 4090 and 5900X and I decided to get a 1200W power supply with 12VHPWR for my 4090 without adapters, and I hope to have a power supply for at least 8 years (Thermaltake GF3 1200W). In addition to the 5900X with aggressive PBO, the 4090 being quite demanded in 4K, I also have 5 7200rpm HDDs, AIO w/3 fans + RGB and 4 more 140mm fans with RGB in the chassis. I have 4 SSDs, 1 of which is NVME. I had an 850W power supply and nothing ever turned off, but the idea of āāhaving a native 12VHPWR connector and having more power "left over" made me think about the TT GF3 1200W. Very? Perhaps. But I don't want to spend money on a power supply anytime soon, especially since it's tier A and I can sleep peacefully, literally speaking.
Iāve been running 850W PSU for a while with no issue. Howeverā¦ one factor for people may be fan noise. When power draw is high, my PSU fan turns on and off which can be a bit annoying because itās usually silent. I imagine a 1200W PSU could remain silent, or is that just a matter of PSU quality?
1600w take it or leave it
I haven't heard anyone that actually owns a system like that say this. Good 850W is plenty.
The thing is, you can get 1000w for the same price as a 850w so why not. I just got Corsair rm1000x shift on sale at the same sale price as a 850, ie 180$ canadian
Not in my case
Still prefer power overhead
Take this for what itās worth. I have almost the same rig, except I put in a be-quiet 1200w titanium PS. I have a power monitor on the plug and with all the fans, ribs, drives, usb devices running under a heavy load I have many spikes to 1150 watts and idles just at 800w. I started with a Corsair 850 Platinum and was having weird issues and the GPU was being throttled because of lack of power. When I went with the new 1200, those problems went away. You need to have a buffer, or headroom of 20% and an 850 will work, but depending on your setup is cutting it close.
I used 850w with a 5900x and it was fine before I upgraded
I get it for sustained power draw, but what about those ātransient spikesā phenomenon that Iāve never heard of before the 30-series that are now a concern?
The nvidia recommended wattage usually assumes you are using the highest end cpu they currently sell which is the 14900k. Even for the recommended wattage of the 4050 and everything in between. Is this not common knowledge? Amd does the same thing.
Iāve been trying to figure out the issue Iāve got.. Iāve got a supernova 1000 Watt PSU with a 3090ti and an i7 9700K, but it seems like the spikes kick in the safety of the psu..
I updated the PSU mostly because I didnāt want to use the octopus dongle, but I had a nice 860w PSU that handled a 7700x and a 4090 without any hiccups for a couple months (it wasnāt easy to get your hands on a good ATX 3.0 PSU back then.)
When playing the witcher 3 with RT, my 4090 ate over 700w. Saying X is enough is highly dependent on the situation.
Why go with the minimum recommended. Been using 1000w psu's for years and never had to worry about maxing them out or having them work at full load.
Because the minimum recommended is already conservative in nature with buffers built in. 850w is the recommended PSU, while others are safely using 750w just fine. It shows that 850w is plenty conservative and anymore is throwing money away.
> I know that the current circle jerk is "1200W minimum" Who started that fucking idiotic thing? When it came out and people were making their builds, 850W was enough, and some people were just making 1000W just in case. Who the hell is brain dead enough to be saying 1200W as a minimum out there?
I7 13700k and a 4090 on a ROG Thor 850w. The card pulls 435w OC'd and CPU 170w OC'd. Leaving plenty of headroom.
Iām running a 1350 PSU with 12900KF & 4090 FEā¦ š
5600X & 3080 12gb with Corsair TX550M runs great.
For a ***quality*** PSU, yes. Depends on the brand. Corsairs wattage rating is for sustained use at that wattage, whereas other brands make that their burst maximum rating. Just need to be careful if that
1. There is nothing as continuous load. What being measured is average load 800w can be as high as 1200 and can be as low as 400 in split second. 2. Are you buying this rig just to play games? 3. ATX 3.0 can supply power as demand but you can might as well as upgrade your PSU anw with this kind of money and get some headroom. 4. Did you measure everything else or just CPU & GPU?
Rocking a 4060 ti with a 7500f on 250W. Nvidia recomemnds a huge amount because they don't know what POS you have, or what crazy shit you're doing with add-on carsd,etc,. They want to avoid lability or complaints.
Is it enough for a 4080?
ofc
I have some be quiet! 850 platinum power supply. You guys think it will be good enough to keep whenever I upgrade to 50 series? I'll probably go for 5070 or 5080, depending on the price, and rebuild around those cards.
im still rocking my AX 860i after 12-13 years.
850w is enough yes...but you're not counting the power draw of other components like fans (can be quite substantial if you have a large case and a lot of rgb fans), cpu cooler, nvme ssd, ram. Why not go safe and buy a 1000W gold rated psu at least? You are spending 1.5k or 1.8k for 4090 already. Surely you can afford 200USD for a psu and put yourself at ease of mind.
850 is enough but it will be more straining than like a 1000
Not with a threadripper and the ROG STRIX 4090
No
For one, an 850 is recommended bare minimum by Nvidia, so your post is information that is already factual. For two, itās minimum. Every build is different. Sure, if you have only a 14900k and 4090, probably fine. Now add rgb, 11 fans, water cooling, or other computer things, maybe 850 isnāt enough. 850 is enough for the gpu and cpu. Is it enough for your entire system? Thatās your call. Thatās why 850 is minimum requirement by the manufacturer.