It's nice to have 1000W.

So you know you're safe 😉

850 is safe

850 is recommended. Though Linus had shows with the 3090 test that what was recommended would trip during spikes, so always go above recommended.

Spend the extra money now to get something with extra headroom, and you'll be less frustrated in the future when you find out you have to upgrade the PSU in the future to power your rtx 4000 series card.
 
So get at least 850.

Anyone saying that you don't need  a bigger power supply for the 3080ti or 3090 is talking based on pure assumptions of what used to work. These new devices have inherent issues that dont prevent power spikes beyond the listed draws. The forums and websites are littered with people experiencing tripping issues with their power supplies from the higher model graphics cards. you need to refer to the psu-tier list and research the ones that would work for your card. All it takes is a cursory glance at the notes to see items like this listed - "Units experiencing tripping issues with high transient power draw GPUs like AMD Vega, 6900 XT and nVidia RTX3080 / 3080 Ti / 3090.". The most common suggest i see to protect yourself comes from the note related to seasonic primes as follows "It is recommended, if going with such units, to overprovision wattage, 1kW for RTX3080 and 1.2kW for RTX3090, or power-limit the GPU'' this is especially important since there are obvious examples where even though you limit the power draw of the GPU in something like "Precision X1" or "msi afterburner", the cards ignore that limit. 
 
link to psu tier list

 

850W is just right

@Epal2Apol  850W is not just right if you don't have the right model powersupply, as it clearly shows in the tier list. Perfect case in point is i started with the EVGA 850 GA which continues to trip immediately in Apex legends with any decent graphics settings and any other games such as warzone that have their graphics settings high after an indetermined period of time. 
 
Picking wattage as the only determining factor is the wrong approach.

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Re: Recommended PSU size for EVGA 3080 ti? 19 hours ago ()

850W is just right

 
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08G-P5-3797-KL 6/12/2021 1:31:11 PM PT No
 
 
 
 
 
    

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Re: Recommended PSU size for EVGA 3080 ti? 18 hours ago ()

I'm hearing rumors that the next gen cards are gonna be even more power hungry. I would definitely go with 1K to be on the safe side rather than be force to upgrade later on after just buying anything lower.  I'm still using my 1K P2 from 2014 to this day.

 
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csfox1981
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I am using 850 Watts and it has no problem.

I have just went with supernova g6 1000W
Came from supernova 750g2
I feel like i was pushing it too much but never had any problems

The thing with power supply's for me is that I use a lot of tie wraps to clean up the cables, if you need to swap it out for a higher wattage its a pain to cut all the tie wraps off and do it all over again just get a little bit higher wattage than you need this way you wont have to change it out down the road always go higher than you need IMHO.

Is the EVGA 850 GA okay for a 3070? I had to take one as part of a bundle, but I'm concerned after reading about all the reboot issues. I'd hate to have to deal with trying to sell it but if I have no choice then that's what I'll need to do.

stay away from GA series.. those are junk

csfox1981
@Epal2Apol  850W is not just right if you don't have the right model powersupply, as it clearly shows in the tier list. Perfect case in point is i started with the EVGA 850 GA which continues to trip immediately in Apex legends with any decent graphics settings and any other games such as warzone that have their graphics settings high after an indetermined period of time. 
 
Picking wattage as the only determining factor is the wrong approach.

Try to use a little common sense in this situation.  The original poster is powering up a 3080ti and Intel's top of the line i9-11900K.  Do you think he will go with a mere EVGA GA model?  Common, I know he will target either Platinum or Titanium PSU.  Do you think he will connect the i9 to a $100 dollar motherboard?  Common, man.  I believe he will connect it to an enthusiast motherboard.  Well, it is just my opinion, other wise the original poster  can correct me.

Your whole system needs to be accounted for. Cpu, Gpu, ssd's, fans, leds, keyboard, mouse, any additional things you take for granted. Cpu and Gpu are the big power hogs but it all adds up. I just got my 3080ti xc hc to replace my 2080 super and I have a new G6 1000w. I keep getting kernel power event 41 resets while benching or gaming, turns out ocp was kicking in. I sat and calculated my total power usage and its over 1000w. My new case has 5 more fans, some led strips, 2 new nvme's, and a custom loop that I didn't have before. I watched my kilowat meter while stressing with occt and hit 970w before shut down. Turns out I'm pulling just over 80amp on the 12v rail. G6 is only rated for 83 like most 1000w units. Transient spikes win, I lose. Plus a power supply is usually most efficient at 50-60% load, so figure what you really use and add a buffer not just wattage but with amperage. I have a 1600T2 on the way and will be drawing nearly 70% with max overclocks.

sze5003

Wolodymyr
Your whole system needs to be accounted for. Cpu, Gpu, ssd's, fans, leds, keyboard, mouse, any additional things you take for granted. Cpu and Gpu are the big power hogs but it all adds up. I just got my 3080ti xc hc to replace my 2080 super and I have a new G6 1000w. I keep getting kernel power event 41 resets while benching or gaming, turns out ocp was kicking in. I sat and calculated my total power usage and its over 1000w. My new case has 5 more fans, some led strips, 2 new nvme's, and a custom loop that I didn't have before. I watched my kilowat meter while stressing with occt and hit 970w before shut down. Turns out I'm pulling just over 80amp on the 12v rail. G6 is only rated for 83 like most 1000w units. Transient spikes win, I lose. Plus a power supply is usually most efficient at 50-60% load, so figure what you really use and add a buffer not just wattage but with amperage. I have a 1600T2 on the way and will be drawing nearly 70% with max overclocks.

Well that doesn't make me feel very good abut the G6 that I have coming tomorrow. I am having the ocp tripped right now on my existing psu while randomly running the OCCT power test and in a game. I don't have anything overclocked, just the ram running at 3200mhz. 3 fans, an AIO, 1 nvme and 4 ssd's. Wondering now if i should return the G6 before I even open it.

A 10980XE, especially if overclocked (which they said it is), is going to pull considerably more power than a stock 9900k. I don't know what your specific power load is, but if they're hitting 970, I would expect you to be well under that and not near the spike limits.