Hey guys, I have had my GTX 470 overclocked since I bought it a few months ago, currently my core is at 800 shader at 1600 and memory at 1800 while the voltage was at 1.025. I tested it in MSI Kombustor for about 30 minutes without any artifacting, and the temps steady at 74C. The problem is I just downloaded the Mafia 2 demo earlier today and while playing it maxed out I would fluctuate between about 90 fps and about 18 fps, it just seems to dip this low for no reason, even at times with no action. Then as a test I decided to reset the clocks back to stock and the game works perfectly, it never seems to shoot down to a frame rate under the 30s. Now lately I haven't really been heavily gaming up until now because I reformatted and didn't want to reinstall everything until I got my new motherboard so I can't really remember if I had this issue in the past with any other games. Has anyone else had this issue? During gameplay with the overclock I would notice a lot of GPU usage fluctuation could it be that I didn't get enough power to the GPU?