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SpeedFan 4.46 Beta 4

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, Vista and Windows 7. It works with Windows 64 bit too.


  • added voltage reading tweaks for several Intel boards
  • added configurations for several Intel boards
  • added MSI MS-7577 configuration
  • added full support for Fintek F71858AD
  • improved Areca support for SAS controllers
  • refactored USB external drive detection
  • added support for USB external enclosures using SunPlus, IoData and Logitech chipsets

NOTE: Registration is required for downloading.

Download: SpeedFan 4.46 Beta 4 | Mirror | 2 MB (Freeware)
View: SpeedFan Website

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