your psu is over kill for your card. Bump it down to 500w and with the money you save get a 5770 instead of the 5670, or get a spinpoint f3 1tb hdd. Its much faster than your current hdd.
I know you're right, my computer is not "balanced". it's light on the video card, heavy on the PSU. And I really hadn't thought much about the hard drive. But in my defence, at $60 for the PSU I don't know if a good 500w unit would be that much cheaper. If I ever get a larger monitor I'll upgrade my video card to something more suitable. Heck I need something to upgrade, that's one fun things about making your own computer. It's a work in progress. Cheers!