You can also check voltages and temps in most bios's.
MBM (mother board monitor) in my signature is another good tool to check temps and voltages.
We have found that between the bios and the monitoring programs, there is not much differance. They all report fairly close, otherwise we would not recommend them.
If you want to know exactly, then a meter is the best, buit if you do not know how to use 1 then it could be a disaster, esp when you do not ground yourself or the meter or touch the wrong contacts.
You have to know what you are doing.
Between the BIOS and Monitoring programs not much diff, between bios and a DMM checking the rails there can be a huge difference (sometimes up to 1V). I hung out for several years on a site dedicated to PSUs and it was commonly seen absolutely OBSCENE voltages returned that were not at all based in reality.
This is not including the odd ones line -12V etc. which can vary by up to 5V.
Edited by PedroDaGR8, 08 December 2008 - 10:04 PM.