850 Watts Enough for 2x 780Ti?

[Gamer94]

Hi,

Until I get watercooling for my PC, i'll be running a fairly simply rig other than the 2x 780Ti's. 1 HDD, no SSD, 3 or 4 USB devices etc. The main power consumption will be from 2 ASUS 780Ti Direct CU's, and a 4770k at stock speeds. The GPU's will be OC'd to around 1150 / 7450 if that makes any difference. I have a Corsair TX850M (850W, 80+ Bronze etc) will this suffice? Thanks

 

[Dark Lord of Tech]

Best price and quality on the net.

Get 1000w. to cover your overclocking.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: EVGA SuperNOVA 1000G2 1000W 80+ Gold Certified Fully-Modular ATX Power Supply ($169.99 @ Microcenter)
Total: $169.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-27 14:09 EST-0500)

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[bignastyid]

It will work for now but, you'll want to upgrade when you get the watercooling and start overclocking.

 

[aerocool]

In theory 1 780ti needs 48A in the 12v Rail. 2 should need about 96A. Don´t know if they can work with less.

 

[bignastyid]

In theory 1 780ti needs 48A in the 12v Rail. 2 should need about 96A. Don´t know if they can work with less.

Nvidia recommends a psu with atleast 42a on the 12v for the 780, and that recommendation is for the entire system not just the video card so adding a 2nd won't double the required amps. With 2 of the Asus cards(uses more power than the referenc) you'd probably want atleast 65a on the 12v rail with no extra overclocking for dual 780ti's.