There seems to be some kind of a "bug" in the gpu-z 0.4.4 reading GPU core temperature. A picture is worth more than lots of words, so:
The (GPU core) temp jumps from 49°C to 80°C and shows no temps in between, as you can see. This happens also when temps are going down after shutting down a 3d app. Other measurements seem to be ok and "real-time", like the fan-rpm and fan-%. HWMonitor does not seem to have similar problem, so I'm guessing it's GPU-Z related.
GPU-Z says the card's (Zotac GTX470) bios version is 70.00.1A.00.03 and the drivers are 258.96 WHQL (Win7 x64).
The (GPU core) temp jumps from 49°C to 80°C and shows no temps in between, as you can see. This happens also when temps are going down after shutting down a 3d app. Other measurements seem to be ok and "real-time", like the fan-rpm and fan-%. HWMonitor does not seem to have similar problem, so I'm guessing it's GPU-Z related.
GPU-Z says the card's (Zotac GTX470) bios version is 70.00.1A.00.03 and the drivers are 258.96 WHQL (Win7 x64).