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Which PSU for CrossFire Sapphire 7950 Vapox-X 3GB

Hey everyone,

Just wanted to get a few opinions on what PSU wattage you would recommend for CrossFiring 2x http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&lid=1&pid=1547&leg=0" rel="nofollow">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 =)
7 answers Last reply Best Answer
More about which crossfire sapphire 7950 vapox
  1. What does the rest of your build look like???

    -Jeff
  2. Best answer
    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_crossfire_review_2_and_3_way,5.html
  3. 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
  4. I would go for this one because of price http://pcpartpicker.com/mr/amazon/pc-power--cooling-power-supply-ppcmk2s950 you don't need that much but it doesn't hurt to have it and given the price it's a steal imo.
  5. Ok so that's one person for 700w minimum. Anyone else want to add their 2 pence worth???
  6. Best answer selected by euphoria4949.
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