The corsair 600W is a good choice. Corsair are a good brand and it is unlikely to blow up or fail like some other cheap PSUs. The GTX660 is a great GPU, definitely get one that has a different cooler from the reference design. The EVGA one is not a great cooler and sounds like a jet engine, but the Gigabyte Windforce cooler is much quieter and provides much better cooling for the card. If you can fund it, the XFX Core 650W is a great PSU with a 5 year warranty. You could get away with a 550W PSU, but just in case you plan on upgrading to a better GPU in 2 or 3 years, the 600/650 will give you much more headroom. If you don't plan to overclock, or only overclock slightly, the Arctic Freezer Pro 7 Rev. 2 is a great CPU cooler.