Well the only problem I could see is that the AMD build is using an AM2 socket I think you would be better of with an AM3 socket build. Also have you checked ofr reviews on the psu?
Sorted ... Asus M4A79XTD EVO AM3 socket instead of the 785 wich i didnt pick up on, also found a review on the forums about the psu and that it's close to rubbish. So looking at others in mind. Thank you mate =)