cpuidHWMonitor is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, fans speed.
The program handles the most common sensor chips, like ITE® IT87 series, most Winbond® ICs, and others. In addition, it can read modern CPUs on-die core thermal sensors, as well has hard drives temperature via S.M.A.R.T, and video card GPU temperature.
Special hardware monitors such as abit® uGuru and Gigabyte® ODIN™ power supplies serie are supported too.

This is a great tool for monitoring the temperatures of your hardwares.  Download it and check it out yourself.

http://www.cpuid.com/hwmonitor.php