So I have chosen all of the parts for my build so far except for the power supply (Build: http://pcpartpicker.com/p/vwYk3C), but I have a few in mind. My first choice would be the EVGA G1 650w PSU, as it offers many more features than my second choice, the Corsair CX600m. My CPU can not be overclocked, and I would like to overclock my GPU, so I would like to know which power supply would be the best for that, or if I could go with an even lesser wattage. Thanks for any replies.