SpeedFan - V-4.28
you can load latest plugin-version here: http://www.drowaelder.de/winpe/PEIndex.htm

SpeedFan plugin was written by Joshua.
SpeedFan is a freeware program that monitors:
voltages, fan speeds and temperatures in computers with hardware monitor chips.
SpeedFan can even access S.M.A.R.T. info for those hard disks that support
this feature and show hard disk temperatures too, if supported.

you can download the program here: http://www.almico.com/sfdownload.php

copy the files:
speedfan.exe, speedfan.chm, pciidsdata.csv, speedfanparams.cfg; sfextra.dll;
giveio.sys,  speedfan.sys. (in system32 Directory !)
to SpeedFan\files Directory.