SpeedFan is a program that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips. SpeedFan can even access S.M.A.R.T. info and show hard disk temperatures.
SpeedFan supports SCSI disks too. SpeedFan can even change the FSB on some hardware (but this should be considered a bonus feature).
SpeedFan can access digital temperature sensors and can change fan speeds accordingly, thus reducing noise.
SpeedFan can find almost any hardware monitor chip connected to the 2-wire SMBus (System Management Bus (trademark belonging to SMIF, Inc.), a subset of the I2C protocol) and works fine with Windows 9x, ME, NT, 2000, 2003, XP and Windows Vista. It works with Windows 64 bit too.
SpeedFan can handle:
- almost any number of South Bridges
- almost any number of hardware monitor chips
- almost any number of hard disks
- almost any number of temperature readings
- almost any number of voltage readings
- almost any number of fan speed readings
- almost any number of PWMs
-added a digitally signed 64 bit driver (fully tested under Vista 64 bit)
-added full support for INTEL CORE DUO internal temperature readings
-added full support for Andigilog aSC7621
-added full support for Fintek F71882F
-added xAP support to publish temperatures and fan speeds
-improved support for Fintek F71782F
-improved support for IT8716F
-renamed temperatures readings for MAX6640
-improved compatibility with Intel D975XBX2
-reduced AD7416 and AD7417 false detections
-reduced MAX6650/6651 false detections
-improved Intel SMBus routines