I have an Antec Neopower Blue 650W power supply. It has 3 +12v rails, and a max power output of 624W on the 3 rails and each rail has 19A. My question is, the video card I want wants 550W and a combined current rating of 42A. Will I have enough amps for this card? It uses 2 pci-e power connectors, and by what i've read, you can put these on different rails or something? idk... so clarification on the questions please! And is the combined current rating include all three rails or just one rail, since I was told by a Fry's employee that the amperage that I can get is found on the 2nd rail, in this case being 19A. I believe he's wrong.