Welcome to SpeedFan
SpeedFan is a freeware program that monitors
fan speeds,
temperatures and voltages in computers with hardware monitoring chips.
SpeedFan can even access S.M.A.R.T. info for those hard disks that support this feature (almost all :-)) and show hard
disk temperatures too, if supported. At the lowest level, SpeedFan is an
hardware monitoring software, but its main feature is that it can control the speed of the fans
(depending on your sensor chip) according to the temperatures inside your pc, thus reducing noise and power consumption.
Most Winbond sensors and ASUS AS99127F support fan speed changing, as
well as others from MYSON, ANALOG DEVICES, NATIONAL SEMICONDUCTORS and
ITE, but
the motherboard should make use of available pins. This means that if
you have, say, a W83782D on a BP6 then you're ok. If you have a W83782D
on some GigaByte's... you're not :-)
SpeedFan works fine with Win9x, WinME, WinNT, Win2k and WinXP.
SpeedFan can be minimized to the tray and does its best to be compatible
with other hardware monitoring softwares.
Warning:
Please note that SpeedFan is an extremely powerful tool. When
first installed, it is configured only as an hardware monitoring tool. This
means it won't try to change the speed of your fans. Changing the FSB is the
other operation that should be done with care. Anyway: changing the FSB should
cause no harm to your system but an hang up :-) Anyway: this is an advanced
option too and you should try it only if you know what you're doing.