I figured that I'd try to overclock my gf2mx card just to see if I could get a better 3dmark score, so I downloaded that powerstrip program. To be safe, I just did a small overclock of 5MHz on both the memory clock and engine clock. When I ran the 3dmark test there was lots of black lines/blocks appearing randomly across the screen. Has anyone had the same problem, or any ideas as to why this happened?