There are various softwares that can be used to find out the temperature of your CPU, Hard Disk, Memory etc. SpeedFan is one such software that can monitor your CPU temperature and its compatible with various OS such as Windows XP, Windows Vista, Windows 7 and the popular version of Windows.
moz screenshot 2 Find CPU Temperature
Feature of SpeedFan
Detect CPU Fan Speed.
Find temperature of CPU, Hard Disk and Processor (Core wise)
Control fan speed in the CPU
Inbuilt option for OverClocking.
Hard Disk Performance and Condition Checker
Full Graphical report of CPU Performance (interms of Temperature)
Free Software
Click here to Download Speed Fan for Free