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PSU Sufficient for GTX 570?

Been trying to do some research, and haven't gotten a clear cut definitive answer regarding the split 12v rail amp requirements to run a GTX 570. I'm curious to know if my current PSU will handle the GTX 570:


To my understanding, 38A is required on the 12v rail, but does the 12v1 and 12v2 at both 22A equal up to 44A to meet that requirement? Or does it actually need to be a single rail? Also what's up with the 12v3 at 25A, and how would I know which rails would be supplying power to my video card when I hook it up?

Any help and information is much appreciated, thank you.

Edit, forgot system specs if needed:

i5-2500K Sandy Bridge 3.3GHz
CORSAIR Vengeance 8GB (2 x 4GB)
Caviar Black WD7501AALS 750GB
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  1. It can handle it. It doesn't have to be single rail, multirail works fine too.
  2. Best answer
    You are good.

    EVGA specs say 38a and a 550w psu:

    If you look at the psu label, it says 540w max on 12v1+2+3. divide that by 12v, and you get a maximum of 45a which is excellent.

    Even a GTX580 or 7970 will run with that psu.

    Most psu's are really a single rail, with the output leads divided up so they meed UL requirements for safety.

    A pci-e slot can deliver 75w maximum, a 6 pin psu lead can deliver 75w max, and a 8 pin lead can deliver 150w max.

    The psu leads will have been divided up for you so you don't have to worry about any of that.
  3. Best answer selected by TechRaider.
  4. Thank you very much for the quick input, guess I'll be ordering my new card then :)
  5. This topic has been closed by Mousemonkey
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