Well he was told by the guys uncle, "Best Possible Computer" i am giving my suggestions, but really WHY ONLY GET AN OPTERON 170?? At LEAST a 4800+ X2 but FX-60 is the way to go if you wont go into server stuff
Real-time testing has been done by G4 TV and they found that more than 1 GB can actually slow down the processing, and is really not needed. The placement of the memory sticks in the dimm slots is important, also. As far as cooling is concerned, liquid cooling is the ONLY way to go for gaming machines.