So far, EVGA SuperNOVA 1000 P2 is working fine with EVGA 3090 FTW3 Ultra and in eco mode.

kevinc313
I just went from a G1+ 650w to a 1300w Seasonic Prime Gold myself because it's one of the best performing PSU's made, even though I'm at less than half the power capablity.  THERE IS A DIFFERENCE. 
 

What is the difference? What value do you get sitting at 50% utilization vs 80%? If it's just efficiency, or long term cost/psu life I wouldn't really call that a performance difference.

I don't care if I'm paying 5% more on electricity, or if my PSU lasts 5 years instead of 10. If these are the only factors then I'll definitely save the upfront cost and get an appropriately sized PSU.

McNoxey

kevinc313
I just went from a G1+ 650w to a 1300w Seasonic Prime Gold myself because it's one of the best performing PSU's made, even though I'm at less than half the power capablity.  THERE IS A DIFFERENCE. 
 

What is the difference? What value do you get sitting at 50% utilization vs 80%? If it's just efficiency, or long term cost/psu life I wouldn't really call that a performance difference.

I don't care if I'm paying 5% more on electricity, or if my PSU lasts 5 years instead of 10. If these are the only factors then I'll definitely save the upfront cost and get an appropriately sized PSU.

 
An appropriately sized PSU for the system would be between 45% and 65% utilized under a gaming load of the system.
 
NOT 80%....
 
One major upgrade and the system load could be at 90% to 100% load.
 
 

3080 FTW3 Ultra
Seasonic Prime Gold 1300W

Only been running benchmarks at stock and undervolted so far, so no real world gameplay experiences, but with my FTW3U I've been using a Corsair HX1000i with no problems.  Biggest issue for me was the cable management.  I had to resort to using 3 x 6+2 cables that also had a forked 6+2, so it looks like a mess now compared to before.  So far, everything has been stable, but I've only put about eight hours in.  Incidentally, I almost always overcompensate when it comes to power supplies, thinking that I will eventually upgrade to something that might require that much power, but never do.  Glad I did the same thing as usual, because it seems to have finally paid off this time. 
 
At the stock settings, the card can spike as high as 381w very briefly, but when undervolting (and while keeping a consistently higher clock I might add...) it only ever jumps to a peak of 338w.  Normally it's been oscillating between ~289 - 310 while undervolted.  I know undervolting a FTW3U seems counterintuitive, but it really isn't if you are relying on air.  The cards throttle way too much due to thermals, and it usually seems to only require hitting 70C before you get a lower clock.  I've been keeping the card below 70C on air, and it's performing better than the stock configuration (basically the same frame rate but less noise and less power draw).  Plus, I had already preordered prior to it being well known how inefficient and power hungry these cards are.  Had I known, and had there actually been any reliable stock, I would have just spent $100 less and grabbed a TUF.  At least I got a card though, so I don't have buyer's remorse.

The rest of the system is just an overclocked 9600K, an Evo 860 Pro, an Evo 970, an Essence STX and three case fans.

Jack-Rabbit
Won't that CPU be your bottleneck now?

probably!  though, the i5-2500K's per-thread performance is still decent by today's standards; depending on how threaded a game is, my DDR3 RAM may be a bigger bottleneck.  i just wanted to go RTX before Cyberpunk (1080 FTW2 before), but i'm going to build on a new mobo+CPU once the next gen of Intel is announced and they've been compared to the new AMD stuff.
 
i'll be switching power supplies with the new build (SFF case), so it's nice to experiment with the power consumption with my current supply before buying another one.  i could likely stick with something around 850W since the new system will likely use the same or less power (compact mobo vs. ATX, only SSDs internally, moving HDDs & optical to external).

emiliog

Jack-Rabbit
Won't that CPU be your bottleneck now?

probably!  though, the i5-2500K's per-thread performance is still decent by today's standards; depending on how threaded a game is, my DDR3 RAM may be a bigger bottleneck.  i just wanted to go RTX before Cyberpunk (1080 FTW2 before), but i'm going to build on a new mobo+CPU once the next gen of Intel is announced and they've been compared to the new AMD stuff.
 
i'll be switching power supplies with the new build (SFF case), so it's nice to experiment with the power consumption with my current supply before buying another one.  i could likely stick with something around 850W since the new system will likely use the same or less power (compact mobo vs. ATX, only SSDs internally, moving HDDs & optical to external).

I had a I7-2600k and the motherboard died, lasted 8 years...

aardvark1134
Corsair RM 850
works well

can you confirm it works well with RM850? I have a EVGA 750w GA but I'm having shut downs with it :( and I can either get a RM850 or a 1000G2

evga t2 1000 watt titanium evga king pin mother board 16gb G skill royal 4800 2 m.2 wd black for a 1 tb raid c drive 14 tb wd helium drive for storage and a 10650k now just waiting for a 3080 ultra gaming card i wonder hen that get them out as it been well over a month on back order
 
 
 
 
 
 
 
 
 
 

Corsair RM850 of 2014 with 3080 FTW3 Ultra stock, 3 SSD, 2 HD, 2x16gb 32000mhz, and 3700X at 4350mhz 1,375v. Not at problem at least for now.

AnonymousGuy
So is the point of this thread to list every 850W+ power supply in existence...cause that's really all I see happening.

 
Not hardly...
 
There are a lot of PSU models out there, one heck of a lot of them.
 
And we have a few 750W PSUs on the list.
 
I put them in order so it could be a rough guide for troubleshooting, if it's a known working unit then they can look at other things.
 
PSU wattage has NOTHING to do with transient power spikes. 
 
You could have a 1200W PSU and it could shut down as an example.
 
The Transient power spikes can easily be double the measured power draw, although only for a few microseconds.
 
It comes down to PSU design and how it handles them.

I would just like to thankyou for this thread ,it helped me deciding on a new psu .Just bought this for a ultra3090 [aka when i get one}cough cough 
EVGA SuperNOVA 1000 G3, 220-G3-1000-X1, 80+ GOLD, 1000W Fully Modular, EVGA ECO Mode with New HDB Fan, Includes FREE Power On Self Tester, Compact 150mm Size, Power Supply           ///present is a tmx850m corsair but only has 2 cables . with that 500 bios i think it a better suite to run instead of this with a little headroom as well. Again ty for ur time because u saved me a ton .
 

I'm spontaneously rebooting with:
 
3080FE
SSR-1000TR (Seasonic 1000W Prime Ultra Titanium)
 
I see that it's good on the list but I'm doing 1-2 reboots per day under load.  Feel free to ignore if desired since it's not an EVGA card.  Someone pointed me here as a reference.
 
Someone also clarified for me that a reboot is a different thing that being discussed, most likely.  I'll show myself out.

jankerson

brentsg
I'm spontaneously rebooting with:
 
3080FE
SSR-1000TR (Seasonic 1000W Prime Ultra Titanium)
 
I see that it's good on the list but I'm doing 1-2 reboots per day under load.

 
The PC rebooting is not the same as the PSU shutting down do to transient power spikes.
 
The OCP kicks in and the PSU literally shuts down completely so you would have to flip the PSU switch off them back on for the PSU to start up again.
 
Believe me it would shut down like someone flipped a switch.

Ok thanks.  Yeah mine reboots as if there was a switch I'm pressing.  No graphical issues or warning, just a clean reboot.

brentsg

jankerson

brentsg
I'm spontaneously rebooting with:
 
3080FE
SSR-1000TR (Seasonic 1000W Prime Ultra Titanium)
 
I see that it's good on the list but I'm doing 1-2 reboots per day under load.

 
The PC rebooting is not the same as the PSU shutting down do to transient power spikes.
 
The OCP kicks in and the PSU literally shuts down completely so you would have to flip the PSU switch off them back on for the PSU to start up again.
 
Believe me it would shut down like someone flipped a switch.

Ok thanks.  Yeah mine reboots as if there was a switch I'm pressing.  No graphical issues or warning, just a clean reboot.

 
More than likely the card in your case.