Looks great, I might go a with a 750 watt PSU in case you want to SLI (although unlikely for most people.) 80 plus gold is good for power saving and lower ambient heat, so maybe that on the PSU. You might want to wait for Nvidia kepler, it's gonna have better performance to cost ratios. That's about all I have to suggest. Also, if it's for gaming the 2600k is sort of out of place because of the hyper threading, it's an extra $100 for something you probably won't use.