Hi all. I am currently saving to build a new computer. Originally i was planning on getting two Radeon 5770's using the Corsair HX650W power supply. But now i am thinking about getting just one 5850 for now, and then getting another 5850 and running 2 in crossfire in the future. My question is very simple. Will the Corsair HX650W Power Supply be enough to power 2 radeon 5850's? I am also planning on getting an AMD Phenom II x4 955 CPU, 4GB of DDR3 1600 memory and 1, 1TB hard drive. So thats pretty much it really. Should the HX650W be sufficient for this setup? Cheers.