Hi, I'm developping my own CPU/GPU/RAM monitoring app and I was wondering how does the GPU-Z engine to retrieve thermal sensor data ? I mean, I know NVIDIA provides functions to retrieve temperatures and that old ATI cards had some chips like LM63 to retrieve thermal information. Unfortunately I'm working on my ATI Radeon 4850 and it seems to have no more LM63 or simillar chip on the card (I listed all the chips ). So I'm "". I searched a lot but I didn't found any information about that. Where can I find the thermal sensor data on recent ATI Radeon cards : ATI SDK, DIRECTX SDK, BIOS, SMBUS, ACPI, something else ?? Hope someone knows !