Looking for Tri Crossfire PSU advice

What size power supply would you use for:


Intel Core i5-2500K (OC)

3x PowerColor AX6950 2GBD5-2DH Radeon HD 6950 2GB 256-bit GDDR5


G.SKILL Ripjaws X Series 8GB

and a small SSD, Optical drive, HDD.

Just looking for a ball park wattage and maybe some models.

5 answers Last reply Best Answer
More about looking crossfire advice
  1. Well you need around 500w for a single 6950 [comfortable room] and each card will probably be around an additional 150-160w only. I would get a quality 850w PSU, some suggestions:
    Antec HCP-850
    Corsair HX850
    Corsair AX850
    Kingwin Lazer Gold 850W
    NZXT Hale90 850W
    SeaSonic X850
    XFX Black Edition 850W
  2. Would that 850W be close to full load? Should I look at 1kW PSUs for some breathing room?
  3. Best answer
    Rated TDP on a 6950 is 200W, so 3 of them will pull about 600W under full load, an 850W might do it, but if you are going to spend the money on 3 6950s step it up to a nice 1k or 1.2kW unit.

    Considering the price tag of that graphics setup i would probably go for a Corsair AX1200, or an Antec HCP-1200, they are both excellent units and will provide enough overhead for overclocking down the line, or some extra power if you add in a liquid cooling system.
  4. Thanks for the response. A little breathing room is nice. That 1.2KW Corsair is looking really good... but, right now, I am thinking 1kW.

    This has been recommended

    OCZ ZX Series 1000W Fully-Modular 80PLUS Gold High Performance Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom

    I am about to pull the trigger; can i get a second on the wattage, make and model?
  5. Best answer selected by vollman1.
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