HWMonitor 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.
HWMonitor does not need to be installed. Just unzip the files in a directory and run the .exe. In order to remove the program, just delete the files. The program does not copy any file in any directory, neither writes in the registry.
Another great, free, little utility from : CPUID