I'm running the game with a rig running E6600 oc'ed to 3GHz, 4GB DDR2-667, 256MB XV 8600GT sonic, and vista home premium. currently able to run the game at high. but when there's too many things happening on screen, the fps will drop dramatically, especially when u get helicopters shooting at u underwater. but this is the best FPS i've played since R6 Vegas. I may be getting the new 8800GT by the end of the week for this game. =p