Hey Viper I just saw your spec, your system is very similar to what I want. Any reason for getting the 700w PSU? And do you think onboard sound will be sufficient?
I got the 700w because I might go SLi sometime in the future and just for peace of mind. You will be fine with 600w.
Myself, I care a lot about what something sounds like. If you are really particular about sounds and that sort, then I would not go with onboard. In other words it will suffice, but not unless you want great sound. Basically: