Hello, I am bulding a system too.
Core i5 3570K
Corsair Vengeance DDR3-1600 8 GB
1.5 TB Hitatchi
XFX 9600 GT(From my old system)
Not sure about the PSU though
I Have shortlisted Corsair TX650V2 and OCZ ZS 750 W.
Which one should I buy ???
I think they both should be okay, but Corsair and Seasonic are better quality, and will probably perform better. Since the PSU is extremely important when building a computer, I would go with the Corsair TX650V2.