SpeedFan for Windows

SpeedFan monitors the voltages, fan speeds, and temperatures of computers equipped with hardware monitor chips. SpeedFan can access S.M.A.R.T. SpeedFan can also display hard disk temperatures and information.

SpeedFan also supports SCSI disks. SpeedFan can change the FSB of some hardware, but this should be considered a bonus feature.

SpeedFan has digital temperature sensors that can be used to adjust fan speeds and reduce noise.

SpeedFan can locate almost any hardware monitor chip connected via the 2-wire SMBus. This is a subset the I2C protocol and works well with Windows 9x, ME, NT, 2000, XP, and Windows Vista. It also works with Windows 64-bit.

SpeedFan can handle:

Nearly any number South Bridgesalmost all number of hardware monitor chipalmost every number hard disksalmost all number temperature readingsalmost every number fan speed readingsalmost all number PWMs