NVIDIA Introduces ESA - Enthusiast System Architecture
 

A couple of the nicer utilities available with any motherboard chipset are NVIDIA's NV Monitor and nTune. They only work completely on NVIDIA chipsets, and not all manufacturers have implemented all the hooks necessary to support the software utility. However, when it is available and working properly it provides a lot of info about your system and a fair amount of system control. When the NVIDIA 680i was our cooling test motherboard we used NV Monitor to measure CPU temperature, in a large part because we found the utility easy to use and it provided very repeatable results.

http://www.anandtech.com/casecooling...oc.aspx?i=3145