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  • 6.4
  • Not bad
  • 350
  • 8
  • Very good
  • Very good
Your rating:
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  1. 0
  • Windows 95
  • Windows 98
  • Windows 98 SE
  • Windows ME
  • Windows 2000
  • Windows XP
  • Windows Vista
  • Windows 7
  • Windows 8
Latest version:
4.49 18/03/13
Last month's downloads:
2.0 MB

SpeedFan is fully compatible with:

  • Windows 95
  • Windows 98
  • Windows 98 SE
  • Windows ME
  • Windows 2000
  • Windows XP
  • Windows Vista
  • Windows 7
  • Windows 8
SpeedFan is also compatible with

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Available languages

  • English
  • Spanish
  • German
  • French
  • Chinese Simp
  • Czech
  • Danish
  • Gallego
  • Italian
  • Japanese
  • Korean
  • Polish
  • Portuguese
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Recent changes

  • -greatly improved DELL support
  • -nVidia I2C support works again with driver 275+
  • -now ATI Radeon support resets Manual Fan Control to the state it had when SpeedFan was started (no more unexpected video card fan set to 100% on program exit)
  • -added support for Intel X79 (Patsburg) SMBus
  • -added support for ServerWorks HT1000 SMBus
  • -added SAT support for USB enclosures
  • -added support for USB enclosures using SunPlus, IoData and Logitech chipsets
  • -added voltage reading tweaks and configurations for several Intel motherboards
  • -added full support for Fintek F71858AD
  • -rewritten Areca RAID support and improved support for Areca SAS controllers
  • -slightly refactored hard disk USB vendor guessing
  • -added support for AMD Family 12h (LLano) temperature
  • -added support for AMD Family 14h (Bobcat) temperature
  • -ATK0110 tries to find the best interface when multiple ones are available in ACPI BIOS (please, report if support is broken for your motherboard model)
  • -added preliminary support for Fujitsu-Siemens Hades
  • Allows you to control fan speed
  • Useful tool to troubleshoot problems
  • Helpful charts to monitor performance and health
  • Asks for admin rights at every launch
  • Can be intimidating for less tech savvy

SpeedFan is a freeware program that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips. SpeedFan can even access S.M. A. R. T. info for those hard disks that support this feature 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).

At the lowest level, SpeedFan is a hardware monitor software that can access temperature sensors, but its main feature is that it can change fan speeds (depending on the capabilities of your sensor chip and your hardware) according to the temperatures inside your PC, thus reducing noise and power consumption.

"SpeedFan 4.46"

  • 1.0
  • 1.0
  • usability1
  • Stability1
  • Installation1
  • Functionality5
  • Appearance8

Not a good choice for a security conscious power user, as it needlessly phones home after install is complete. Thus Speedfan 4.46 is a security risk, which could either be compromised in the future by a hacker, or the programs author, or it already is a key logger or otherwise.

  • Works great at monitoring temps and fan rpm's.
  • Attempts to phone home at every boot. Once it's blocked, it functions incorrectly. It should have a user selectable switch, that would either allow or not allow internet access after initial install, which is to recognize which sensors your motherboard has on board, but is not required after that is completed.

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10 Jul 2012

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