Ok, that 6800 gt stock is a little faster than your card but a $190 price tag for a card that is 4 years old doesnt justifie a couple more fps. Your could unlock some pipelines and shaders with rivatuner if you look up guides on it and overclock. Make sure to get a zalman vf-900 if you overclock as well. The combination of unlocking and overclocking your card would blow that 6800 gt away!