What's up with high-end PSU stock availability?

foop · 26 Jul 2017 at 14:46

I'm trying to buy a >1000W PSU for a machine I'm building and all the brands I know and trust are out of stock with Overclockers and the competitors I've looked at.

What's up with the PSU market at the moment? Is it the resurgence of home coin mining, or is something else going on?

Borealis · 26 Jul 2017 at 14:58

Not just home mining, the business miners are also buying up high-end PSUs.

pastymuncher · 26 Jul 2017 at 19:28

Do you actually need that much power though? What does it need to power?

foop · 27 Jul 2017 at 14:04

pastymuncher said:
Do you actually need that much power though? What does it need to power?

Overclocked 1700X, two 1080 Ti, M.2 drive, 2 SSD, 3 HDD, 14 140mm fans, 2 D5 pumps, Aquaero 5XT.

It's mostly a ridiculous vanity project, but I'll also be using it for some work with CUDA that'll make the 1080s run at 100% GPU load, 250W for up to 8-24 hours at a time.

pastymuncher · 27 Jul 2017 at 19:11

A good 850w psu should be more than enough unless you are going to have both gpu's heavily clocked and overvolted. The one 1080ti SLI review that I can find used a X99 system with a overclocked i7 6850k and max power draw came in at 656w at the wall.

foop · 28 Jul 2017 at 13:41

pastymuncher said:
A good 850w psu should be more than enough unless you are going to have both gpu's heavily clocked and overvolted. The one 1080ti SLI review that I can find used a X99 system with a overclocked i7 6850k and max power draw came in at 656w at the wall.

Thanks, that's very interesting.

I tried a couple of online PSU calculators, and both estimated something around 1000W. The two 1080Ti should take a total of 500W, so I was wondering where the other 500W was going.

EsaT · 30 Jul 2017 at 16:10

foop said:
The two 1080Ti should take a total of 500W, so I was wondering where the other 500W was going.

Single factory overclocked 1080 Ti can consume towards 300W.
https://www.techpowerup.com/reviews/ASUS/GTX_1080_Ti_Strix_OC/27.html
So depending how well SLI works and is capable to stressing both cards fully power draw can definitely be quite heavy for 850W PSU if you overclock CPU as far as it goes.

And in milliseconds scale graphic cards can draw considerably more.
http://www.tomshardware.com/reviews/evga-gtx-1080-ti-ftw3-gaming,5061-5.html
http://www.tomshardware.com/reviews/aorus-gtx-1080-ti-xtreme-edition,5054-4.html

jeff83nz · 10 Aug 2017 at 16:11

MINERS. that is all

Ace Modder · 10 Aug 2017 at 19:22

I have 2 x GTX 1080ti overclocked and with a 5390K at 4.4ghz my total power usage is 700w-800w when mining and using prime95, everyday use would never get to that level though.

Morve · 11 Aug 2017 at 00:34

Everyone is buying them up ready for Vega