took me forever to figure out that the startup screen i had replaced the stock windows screen with was what was prohibiting my rig from installing SP3.
AMD CPU : brisbane 4200-4800
AMD MOBO : any 740g
PSU : i dont know psus that well. i like my vx550.
Cases : centurion 5
also, its not that important, but on the list in the high-end builds it says the 6400 black edition has an unlocked multipier. it doesn't. only the FX chips and the 5000BE are unlocked.