I'm running a P4 3.2 - GeForce 6800GT - 2GB of 3200 Ram - DVD-RW - CDRW - 80GB HD and a Cool Master Jet 4 heatsink. I've had problems with a cheaper 450w PSU crapping out and I need some advice on what to do. Should I get a better 450-500Watt PSU or go with a less expensive 550-580Watt PSU. Any advice is greatly appreciated.