i dont know why but older games have problems on my rig but with newer games i can just put it on high without any hitching /freezing.
i bought nfs undercover everything is on high but every time at random my framerate just drops to 10 to 5 frames per second can someone help me? BTW thanks for the help with mafia 2 i patched it and now i can play problem free.
Have you got any background proccesses running while playing the game. More usage for the CPU might cause the problem.
Try disabling the anti-virus while playing the game.
Also disable any unwanted programs.