Heck even a Phenom 9600 would be sufficient for me, I checked my game FPS with Xfire, and I'm finding that I'm severely lagging in game (BFBC2), part of the reason I'm getting pwned. I got the tactical stuff down though.
I'm guessing the Havok engine is really pwning my dual-core and HD 3850 512MB (at 1440x900 @ low), so I guess I just need a decent Quad-core and a slightly newer GPU and I'd be set.