Topic Title: Cross Fire 7990 Question
Topic Summary: Power Supply Question
Created On: 09/05/2013 11:33 PM
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 09/05/2013 11:33 PM
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AlecTalon
Peon

Posts: 3
Joined: 09/05/2013

So, I'm building a new computer, and the wattage on the two cards are 750w Each. My power supply that I just bought is a 1000w, is that going to be enough to power my cards, or do I need to return the power supply for a higher wattage? 

Thanks for your help!

 09/06/2013 08:59 AM
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black_zion
80 Column Mind

Posts: 12554
Joined: 04/17/2008

Whoever told you a 7990 pulls 750w is a moron. The HD 7990 pulls 375w at stock, or 750w for a pair. Add on 150w for the rest of your system and you still come in under 1000w. However I would suggest you return it and get a 1200w for some overclocking headroom, which you will need since most games will not use all 4 GPUs.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
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