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850W Enough for 2 Way SLI GTX 770s?

Last response: in Components
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August 29, 2013 8:59:25 AM

I was going to get the Corsair HX850 850W 80 plus Gold Modular Power Supply and I need to know if it will handle these cards when I plan to add the second 770 in the future.

CPU: Intel i5 4670k
Mobo: ASUS Z87 PRO
GPU: EVGA GTX 770 SuperClocked w/ ACX Cooling (x2)
PSU: Corsair HX850
RAM: 8GB G.SKILL Ripjaws X Series (2x4GB)
HDD: 1TB Western Digital Black
Cooler: Cooler Master Hyper 212 EVO
SSD: Samsung 840 EVO 120GB
Optical Drive: Samsung DVD-ROM Drive

Is 850W enough or should I go for an 1000W PSU? The above parts are what my PC will be at its fullest, the SSD and 2nd 770 will be added later on.

More about : 850w sli gtx 770s

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a c 1864 ) Power supply
a c 705 U Graphics card
August 29, 2013 9:02:26 AM

Extra headroom \ 1000w \ SEASONIC made \ Gold certified

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Cooler Master V1000 1000W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($129.99 @ Newegg)
Total: $129.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-29 12:02 EDT-0400)
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a b U Graphics card
August 29, 2013 9:08:20 AM

I am currently running 2 680's on that exact psu...it is enough. I am running a decent overclock on my cpu, but not the gpu's. If you want to overclock them you might want to get something bigger.
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a b ) Power supply
a b U Graphics card
August 29, 2013 9:18:02 AM

1000w is just NOT needed. I'm running 2 760s on a Corsair 650TX and had recently been running two 7950s on it. I'd fathom a guess and say that you might even get away with a 750W PSU, but 850W will be absolutely fine either way.
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a b ) Power supply
a b U Graphics card
August 29, 2013 9:30:46 AM

A good 650W unit will run that fine. I don't know why everyone thinks you need a 1000W unit. You'd need to have 4 gpus running to actually need a 1KW psu.
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August 29, 2013 10:27:54 AM

SR-71 Blackbird said:
Extra headroom \ 1000w \ SEASONIC made \ Gold certified

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Cooler Master V1000 1000W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($129.99 @ Newegg)
Total: $129.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-29 12:02 EDT-0400)


That is an incredible deal actually. It is cheaper than the Corsair 850W even without $25 off. i guess it comes down to is Cooler Master a reliable brand? I would think so as it is rated 80 plus gold...
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a c 1864 ) Power supply
a c 705 U Graphics card
August 29, 2013 10:41:33 AM

It's made by SEASONIC , not Cooler master.
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August 29, 2013 11:32:36 AM

SR-71 Blackbird said:
It's made by SEASONIC , not Cooler master.


Oh, cool. Thats what I will be going with then, would you say it is as reliable as the HX series from Corsair
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a c 1864 ) Power supply
a c 705 U Graphics card
August 29, 2013 11:35:08 AM

Yes for sure!
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