Do you mean a GTX560 or a GTX660? Doesn't really matter anyway, I would recommend a power supply above 550W, no more 700W, unless he plans to use SLI in the future...
Do you mean a GTX560 or a GTX660? Doesn't really matter anyway, I would recommend a power supply above 550W, no more 700W, unless he plans to use SLI in the future...