EVGA 8800GT SC with furmark = 82°C
EVGA 8800GT SC (with ghetto fan mod on top of chipset) running Furmark = 74°C
EDIT:
MSI GTX260 OC core 192 fan on auto with MSI Afterburner = idles 45°c (AB set fan auto at 50%), full load at 72°C (AB set fan auto to 60%)