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7950 crossfire power req

Last response: in Graphics & Displays
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January 31, 2012 3:14:03 AM

Hi Forum,

currently have corsair 850W with 7970 and i7-950 (check my rig in my signature).

Would crossfire go over the 850W limit (if i leave 7970's both at stock with modest OC on CPU (3.5-3.8).

Thanks.
a b U Graphics card
January 31, 2012 9:12:36 AM

Even with an extreme overclock you wouldn't get close to 850W
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a b U Graphics card
January 31, 2012 9:27:17 AM

850W is the perfect size for 7970 or 7950 crossfire even when overclocking.

The load power consumption is about on par with GTX570, which is recommended to have 850W for SLI solutions.
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a b U Graphics card
January 31, 2012 9:28:57 AM

850w is easily enough, even 750w would be enough i think.
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a b U Graphics card
January 31, 2012 9:30:51 AM

Actually power consumption is alot less than 570 see

also are you talking about a7970 or 7950?
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a b U Graphics card
January 31, 2012 11:11:48 AM

simon12 said:
Actually power consumption is alot less than 570 see
http://images.anandtech.com/graphs/graph5476/43908.png
also are you talking about a7970 or 7950?


I refered to the 7970, which he had listed in the text and not the title.
In either case the 850W is nicely enough.
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February 7, 2012 10:54:52 PM

So my TX850W can support 7970 CF when overclocked, also including CPU overclock?

My Corsair TX850 is not the rev2 i dont think. Just confirming so i dont end up spending another chunk of cash only to realize i have to buy another PSU for another 300$.
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a b U Graphics card
February 8, 2012 8:00:31 AM

Yes, TX850 is enough for 2 7970's and CPU overclock.
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August 25, 2012 6:33:40 AM

would a 650w support two radeon 7950's both at 10% OC?
cause a psu calculator said it recommended only 550 but i dont know if i can really trust it =/
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