yes i have tried overclocking from 513 to 630 for the clock speed then from 782 to 830 for the other forgot what it is sorry, no improvement a few fps more ive read theres a fault with 8800 320 mb that nvdia have admitted something to do with a memory flush that slows fps down radomly and when you alt tab out of game and back in fps increase. i dont think drivers are that good yet with vista even though vista been out since january