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Which PSU for CrossFire Sapphire 7950 Vapox-X 3GB

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a b U Graphics card
November 11, 2012 11:09:26 PM

Hey everyone,

Just wanted to get a few opinions on what PSU wattage you would recommend for CrossFiring 2x Sapphire HD7950 Vapox-X 3GB's???
The reason I ask is because I looked at the manufactures site to get an idea of the PSU I would need, I then checked on a few PSU calculators to see if they came up with the same estimation I had and frankly I'm getting a lot of very different/weird recommendations from these calculators, some are saying as high as 1000w!! I'm thinking this might have something to do with the 7950 Vapor-X's requirement of 2x8-pin PCI's over the standard 7950's only requiring 2x6-pin PCI's.

So what's your opinion, what PSU wattage would you go for???
Cheers guys =)
November 12, 2012 12:25:43 AM

What does the rest of your build look like???

-Jeff
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a c 185 U Graphics card
November 12, 2012 12:39:24 AM

Here is Guru3D's power supply recommendation:

Radeon HD 7950 - On your average system the card requires you to have a 500~550 Watt power supply unit.
Radeon HD 7950 Crossfire x2 - On your average system the cards require you to have a 700 Watt power supply unit as minimum.
Radeon HD 7950 Crossfire x3 - On your average system the cards require you to have a 850~900 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina. Source - http://www.guru3d.com/articles_pages/radeon_hd_7950_cro...
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a b U Graphics card
November 12, 2012 12:47:36 AM

J3TW4V3 said:
What does the rest of your build look like???

-Jeff


ASRock Extreme6
i5 3570k OC@ 4.2GHz
8GB RAM
1x SSD
2x HDD
1x BluRay/DVD drive
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a b U Graphics card
November 12, 2012 10:00:41 AM

Ok so that's one person for 700w minimum. Anyone else want to add their 2 pence worth???
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a b U Graphics card
November 12, 2012 11:41:40 PM

Best answer selected by euphoria4949.
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