I had to turn up the fan on my 8800GT manually, because on games, such as Combat Arms, it would start to get slow to switch to 3D rendering, and start bugging up. Overclocked slightly, it lasted a few seconds on TF2 before glitching up. With the fan set to 40% now (moved up from 20%), it idles at around 49°C, and will go up to 55° or 56°, sometimes higher, while playing Combat Arms on all High/Very High settings at 1152*864.