There are two generations of 8800GT coolers, the original with a small fan intake and a later one with a larger fan intake.
I flashed a copy of the 8800GT SSC v5 on my cards and they run much cooler, crysis does not crash anymore. eVga has a BIOS that spins the fans up more aggressively, it does work, but their tool only flashes eVga cards. You could flash any othe card with evga bios.
The G92 8800GTS is a totally different beast.