I'm buying 7850 2GB.. My current config is AMD Phenom 2 x4 965, 8GB ram DDR3 1600MHZ 2x2 4x1,ASrock 970 extreme 4, 2 SATA HDD. Can my VIP 600W smps handle 7850 2GB .. before it I had HD 4890 worked fine with this SMPS and also what is current rating on dual 12V rails of VIP 600W. Please help me out