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
greatly improved temperature reporting for almost all nVidia video cards
now fan speeds are lowered more aggressively
added support for AMD K11 temperature sensor
added full support for SMSC EMC6W201
added full support for SMSC SCH5127
added support for SMSC EMC2710P fan speed readings
ARECA RAID support updated to Build 270
added AMCC/3ware test code
improved IT8720F identification
fixed F1 context sensitive help key support
better identification of DIRECT RAMBUS modules
enabled Intel ICH8 SMBus, if needed
identified SMSC SCH5317
some addresses on the Asus P5N32-E SLI are no longer scanned
some addresses on the Asus Rampage Formula are no longer scanned
some addresses on EVGA NFORCE 680i LT SLI are no longer scanned