I recently upgraded my video card to an NVidia 8600 OC with 256 Meg. I have an 120mm fan pulling air in the lower front of the case, an 80 mm fan pushing it out the back, not quite at the top of the case. The video card's GPU has a heat sink and fan, as does the CPU. I did not realize the darned card was overclocked from the factory and now I am having overheating issues with the GPU after several hours of running.

I play some graphics intensive games, particularly CoH/CoV, so I don't want to give up the wonderful resolution. I don't have anymore places to attach more case fans. What would your sage advice be?

Should I cut an opening for a new fan in the top of the case with my Dremel tool? Will one of those flexible internal fans, pointed at the Graphics card help? Should I upgrade my exhaust to an 120 mm fan?