I am using at I tool and i am doing the scan for artifacts. I notice it would be at 132fps then suddenly drop to 93fps then rise again to 132fps. It was at stock speed. I am using a Asus N6600. Before I overclock I want to know if this is normal or if it is a problem with anything. Whether it be head or dieing. (Card is quite old and well used) I am overclocking to extend it's usefulness. It just stutters, the card should easily be able to handle that. My ATI 256MB X1050 agp could and it is agp. Edit: I am also unable to view the current temperature, ntune doesn't read anything.