Nice little prog

[ajak]

http://www.freewarebox.com/free_4556_sensorsview-download.html
SensorsView is a freeware program that monitors temperature of CPU, motherboard, hard disks, voltages, and fan speeds. This program informs you about critical values of any parameters of your system (e.g. about overheating the processor or a stop of fans).

 

[zeb]

I've always liked speedfan
It's basically the same thing, but with more options