Added athlon II 631 and combo deal. Dirt cheap quad setup, plays BF3, MW2, Black ops, etc flawlessly (with a good enough discreet GPU of course).
The FM1 quads perform about the same as Phenom II clock for clock, from what I've found anyway. They definitely out perform Athlon II AM3 cpu's easily. They also have superior memory controllers, faster speeds and tighter timings, along with better bandwidth it's all around better.