Also, will the Cooler Master Extreme II 725W power supply be good with a Geforce GTX 650ti graphics card. I saw where someone had problems with the amps. I know nothing about that. I'm not using the gtx 650ti yet, but that is what I will be upgrading too shortly.
If my system specs will help, they are as follows: Custom built AMDX2 Dual Core 6000, 600W PSU, 500G HD, DVDROM, DVD Writer, 7-1 card reader, 3 front usb ports, 4 in rear. 7.1 Soundblaster audio, GeForce 8400 512 meg GPU/PCI Express. I have upgraded this system from WinXP to Windows 7 64 bit. Will be upgrading GPU to the GTX 650ti within a couple of months. Very important to get the right PSU before replacing the GPU. Any suggestions would be greatly appreciated.