i wouldn't get that PSU it gets great watts but neither +12v rail is decient even for dual rail standards (don't get me wrong dual rail is good) the first rail only is 15 amps and the second is a pathetic 8 amps.
to get the actual amp rating don't look at the new egg stats look at the close in picture.http://www.newegg.com/app/ViewProductDe ... 359&depa=1
I think you read a little too quickly, that PSU has 3 12V rails
, 15A-12v1, 15A-12v2, 8A-12V3
If you are going to spend that much on a PSU, may I also suggest this one
Same 38 Amps on the 12V, plus 2 separate shielded leads to use for your video cards. Also, adjustable voltage pots so you can fine tune the voltage exactly where you want it. I have it's smaller sibling, the 520 W version, and it has everything you would need for PCI-E and SLI.