Got the new UBER:rig up and running. Running ARMA 2 now all vis settings on Highest, no AA/AF @ 1680x1050x32 (till I upgrade to Win 7 64 bit this Fall) , 120 hz. 3600 meter view distance.
Quad Core DOES make a difference. It feels like I am playing a whole new game.... when I compare it to my old rig. Stunning visuals. Way better A.I. performance as well.