Overclocking
We used ATITool to automatically find the maximum clocks of the Zotac GeForce 8500 GT. The overclocking process works as easy as on any other NVIDIA card. There are no distinct values for 2D/3D clocks - the card always runs at 700 MHz / 400 MHz by default.
The overclocks are pretty nice. In the end the card runs totally stable at 732 MHz core (4.5%) and 508 MHz memory (27%). I think you have to see those overclocks relative to NVIDIA's default clocks, which means the card is running 62% / 27% faster than the reference design.
The small stock cooler does a good job at keeping the card cool. It does not get very hot, not even when overclocked. The fan noise is very acceptable for this kind of cooler.