Need advice on good hardware test application for WinXp

[x5452]

I recently acquired a few computers complete with Xp Pro licensing that I want to revamp and give to some families in my area who can't afford to buy one but I don't want to pass on bad hardware.

What's the best free hardware test application available for WinXp?

 

[runswindows95]

To test hardware before even installing XP, you could always run a Linux Live CD, such as Ubuntu, on it to see if everything works. All you have to do is download the ISO, burn it to CD, and boot from CD.

http://www.ubuntu.com/getubuntu/download

 

[Granite3]

Either Orthos or Prime 95, both free, will tell you if you have a stable system.

Coretemp also does the same if you have a 65nm or larger chip, doesn't seem to play nice with the 45nm stuff.

Speedfan will test the HDs for free as well.

 

[x5452]

I don't want to push these machines to their limits I just want something I can use as a diagnostic tool. Something similar to TechTool for Macs but preferrably free.

I have an older build of a Linux Live CD stored somewhere but I'd prefer a standalone app I can run as needed. Anything other than what's above that I can use?