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
- added full support for AMD K8 (Sempron, Opteron, Athlon 64) internal temperature sensor
- added full support for Intel ICH8 SMBus
- added full support for NVIDIA MCP04
- events can now send EMAILs using the built-in multithreaded server
- SEND MAIL for events sends an email containing all current readings (temperatures, fans, fan speeds, voltages and hard disk status)
- implemented hysteresis in fan speeds control (this should greatly reduce fluctuations)
- optimized chart repainting
- fixed multiple instance detection of video cards
- added detection and support for new revisions of IT8712F
- added detection for some Analog Devices chips
- added support for hardware monitor at unusual addresses on W83627EHF
- identified some new Winbond W83627 revisions-hard disk temperature is recomputed in the IN-DEPTH ONLINE REPORT
- fixed "error loading event" message at startup