SpeedFan is an application that checks voltages, fan RPM as well as temperatures in PC with hardware monitor chips. SpeedFan can still way in S.M.A.R.T. info as well as explain hard disk temperatures.

SpeedFan supports SCSI disks as well. SpeedFan can even modify the FSB on several hardware (but this should be measured an extra attribute).
SpeedFan can way in digital temperature sensors as well as be able to modify fan speeds consequently, as a result to reduce sound.

SpeedFan can get roughly any hardware monitor chip attached to the 2-wire SMBus (System Management Bus (trademark belonging to SMIF, Inc.), a division of the I2C protocol) as well as works very well with Windows 9x, ME, NT, 2000, 2003, XP as well as Windows Vista. It works with Windows 64 bit as well.

SpeedFan can handle:

• almost any number of PWMs
• almost any number of hard disks
• almost any number of South Bridges
• almost any number of voltage readings
• almost any number of fan speed readings
• almost any number of temperature readings
• almost any number of hardware monitor chips

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