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 also 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.

What's New

Version 4.50

  • Added full support for Nuvoton NCT6791D (including fan control)
  • Improved external (USB) hard disk detection (some were not properly detected on Windows 8)
  • Added a new method to access hard disks connected to 3ware RAID controllers (works on 64 bit systems too)
  • Added support for Intel core temperature (Family 06h Model 3Ch)
  • Added support for Intel core temperature (Family 06h Model 3Eh)
  • Added support for AMD Family 15h temperature
  • Added support for AMD Family 16h temperature
  • Added support for Intel 8 Series SMBus
  • Added support for Intel 8 Series Mobile SMBus
  • Added support for Intel 9 Series SMBus

User Reviews


Download (2.1MB)

User Rating




Windows All




Alfredo Milani Comparetti


Sep 4, 2014


Report Software

Latest Version

SpeedFan 4.52

Old Versions

SpeedFan 4.51

SpeedFan 4.50

Developer's Software

SpeedFan 4.52

Security Levels

To avoid any potential harm to your device and ensure the security of your data and privacy, our team checks every time a new installation file is uploaded to our servers or linked to a remote server and periodically reviews the file to confirm or update its status. Based on this checking, we set the following security levels for any downloadable files.


It is highly likely that this software program is clean.

We scanned files and URLs associated with this software program in more than 60 of the world's leading antivirus services; no possible threats were found. And there is no third-party softwarebundled.


This program is advertising supported and may offer to install third-party programs that are not required. These may include a toolbar, changing your homepage, default search engine, or installing other party programs. These could be false positives, and our users are advised to be careful when installing and using this software.


This software is no longer available for download. It is highly likely that this software program is malicious or has security issues or other reasons.

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