SpeedFan 4.38 Beta 13

SpeedFan 4.38 Beta 13 is an extremely easy to use yet super powerful program that allows you to monitor 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.

The main viewing purpose of SpeedFan is to show its user what's really going in their machine. When minimized, a temperature reading is showed on the button right of the desktop. When Speedfan is in an open window you can see a whole lot more. From Fan speed to total voltage, you can view any and all of the current fan.

SpeedFan monitor temperatures from several sources. By properly configuring SpeedFan, you can let it change fan speeds based on system temperatures. When choosing parameters for the minimum and maximum fan speed, try to set them by hand (disable all the VARIATE FANs checkboxes) and listen to the noise. When you hear no noise from the fan then you can set that value as the minimum fan speed for that fan. I suggest to use 100 as the maximum value, unless you hear a lot of noise from it, in which case you might reduce the maximum speed to 95 or 90. You can set, say, 60 as the maximum value and, sometimes, I myself set it that way. Consider that when the WARNING temperature is reached, the program sets the fan speed to 100, whatever maximum speed you selected. One last word should be said regarding the USE FAN x listbox. In my PC, more than one temperature changes when a fan runs faster. You can configure on which fan every temperature should rely. On my system, TEMP1 and TEMP3 are both influenced by FAN1.

Major Features: 

1. Completely free!
2. Show voltages, fan speeds and temperatures
3. Supports SCSI disks
4. Access digital temperature sensors and change fan speeds accordingly
5. Find almost any hardware monitor chip
6. Supports Windows 64-bit
   

Enhancements:

Requirements: no special requirements