Windows 7: Open Hardware Monitor

The Open Hardware Monitor is a free open source application that monitors temperature sensors, fan speeds, voltages, load and clock speeds of a computer. It supports most hardware monitoring chips found on todays mainboards like the ITE, Winbond and Fintek families. The CPU temperature can be monitored by reading the core temperature senors of Intel and AMD processors. The sensors of ATI and Nvidia video cards as well as SMART hard drive temperature can be displayed. The Open Hardware Monitor runs on 32-bit and 64-bit Microsoft Windows operating systems without installation.





Features
Supported Hardware
CPU core sensors
Intel Core 2, Core i3/i5/i7
AMD K8 (0Fh family), K10 (10h family)
Mainboard sensors
ITE IT8712F, IT8716F, IT8718F, IT8720F, IT8726F
Fintek F71858, F71862, F71869, F71882, F71889ED, F71889F
Winbond W83627DHG, W83627DHG-P, W83627EHF, W83627HF, W83627THF, W83667HG, W83667HG-B, W83687THF
GPU sensors
Nvidia
ATI
Hard disks
S.M.A.R.T. sensors (optional)
Fan controllers
T-Balancer bigNG

User Interface
Display of sensor value, min, max and (technical) limit (columns configurable).
Editable sensor parameters (via context menu or double click on the sensor).
Display any sensor in the system tray (via context menu, color configurable).
Plotting of temperatures graphs (currently limited to max 100min).
Window position and size is restored the next time the application is started.
Sensor names can be edited (click sensor twice or select the sensor and press F2).
Display can be limited to certain sensor types (voltage, clock, temperature, fan).
Hard disk S.M.A.R.T. sensor reading can be disabled to allow unused disks to be turned off.
Minimize to system tray.

Open Hardware Monitor | Temperature, Fan Speed and Voltage Monitoring for Your Computer

A Guy