Is a 850W PSU enugh to run 780s in SLI?

nanobeast

Limp Gawd
Joined
Sep 21, 2007
Messages
348
A few months ago i picked this PSU for my new build (cooler Master V850 built by Seasonic)

http://www.amazon.com/Cooler-Master...s&ie=UTF8&qid=1402855889&sr=1-1&keywords=v850

At the time I planned on running a single GPU. However, I have recently decided on a pair of Evga 780s in SLI. These are the factory superclocked versions.

http://www.amazon.com/EVGA-SuperClo...F8&qid=1402853317&sr=8-2&keywords=evga+780+sc

Will my PSU be enough to run these cards or do I need to upgrade?

Note that I do not intend to overclock anything other than the two GPUs which are factory overclocked and I will leave them as they are.

The rest of my system consists of this....

i7-4770k CPU
Gigabyte Z87X-UD4H MB
32GB Corsair XM5 1600 Mem
1 WD Black 2TB HDD
1 Samsung Evo 1TB SSD
DVD Writer
6 case fans (Fractal Arc2 Midi)
Logitech 710+ keyboard
Logitech G502 mouse
 
Last edited:

oshia86

Gawd
Joined
Jan 16, 2007
Messages
810
I've run 2 580's, 2 680's, and now 2 780's (since launch date) with my HX850. No problems here. A quality 850w is plenty.
 

Suprfire

2[H]4U
Joined
Sep 1, 2008
Messages
2,116
Good to know. I am assuming the one I have is a good quality one as yours?

Yup

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=350

OklahomaWolf actually mentions the HX850 in the value section of the scoring.

Folks, for the second week in a row, we've seen a unit that totally dominates its price bracket. Only the Corsair HX850 and XFX Pro Series Black 850W gives this thing any competition, and they're still ten dollars more money.
 

Odellus

[H]ard|Gawd
Joined
Dec 25, 2010
Messages
1,789
the minimum i'd run two 780s or similar on is a 650W (seasonic or such, obviously), 850W is plenty.
 

doubletake

Gawd
Joined
Apr 27, 2013
Messages
827
It'll be plenty. I ran a 2500k @ 4.4ghz, 16GB RAM, 4xHDDs, 3x 180mm fans, and two DCUII 780 @ 1150mhz on a TX850m, and it's more than enough. System draw while gaming with both cards barely hit 600W.
 

Armenius

Fully [H]
Joined
Jan 28, 2014
Messages
31,400
I am running two of those very video cards myself on a Corsair HX850. Demanding games will push power draw from the wall up to around 600-650W as doubletake said, so an 850W PSU is right in the sweet spot for this type of system.
 
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