Nice little program http://www.xtremesystems.org/forums/...light=CoreTemp
This is a new program that lets you monitor Intel's "Core", "Core 2" and all AMD K8 chips' die temperature. The temperature readings are very accurate as the data is collected from a Digital Thermal Sensor (or DTS) which is located in each individual processing core, near the hottest part.
The way this program works is as follows: Intel defines a certain Tjunction/TCaseMax temperature for the processor. In the case of Yonah it is 85CÂ° or 100CÂ°. First of all the program reads from an MSR, detects the Tjunction/TCaseMax temperature. A different MSR contains the temperature data, the data is represented as Delta in CÂ° between current temperature and Tjunction/TCaseMax.
So the actual temperature is calculated like this 'Core Temp = Tjunction/TCaseMax - Delta'
The size of the data field is 7 bits. This means a Delta of 0 - 127CÂ° can be reported in theory. But from preliminary tests, the reported temperature doesn't go below 0CÂ°, no matter what kind of cooling was used.
For AMD the value the CPU reports is read and converted into an actual temperature. AMD chips can report temperatures between -49C and 206C