Here's a list of parts in my system other than the two BFG GTX 260 graphics cards: - AMD FX-4170 Quad-Core @ 4.2GHz - Cooler Master V6GT CPU Heatsink Cooler - MSI 970A-G46 ATX AM3+ 970 Motherboard - 8GB (2x4GB) G.SKILL Ripjaws X DDR3-1600MHz RAM - Seagate Barracuda 1TB 7200RPM 64MB SATA 3.5in Internal HDD - Cooler Master HAF 912 Mid-Tower with six 120mm fans - Keyboard, Mouse, Headphones, 4 External HDDs
More aboutwill power supply good enough
That is more than enough. A quality 650W can run it well too.
2 x GTX 260 shouldn't require more than 550W, but 750W is good if you want to upgrade at some point.
systemwise i would fix things up given you can do better but for the psu, just get that. the gtx 260 has a tdp of 202w which i would assume more given you would overclock them. that would make 400w+ 100w from the CPU.