CPU details:

http://hp.vector.co.jputhors/VA002374/ WCPUID
http://www.cpuid.com/cpuz.php CPU-Z

CPU / Memory and System Benchmarks:

http://www.sisoftware.net/ Sandra
http://www.lavalys.com/products.php?lang=en Everest
ftp://pi.super-computing.org/pub/exec_windows/ SuperPI
http://www.futuremark.com/products/ PCMark
http://www.sciencemark.org/ Sciencemark
http://clibench.daemonware.ch/ CliBench mk III smp

3D / Video Card Benchmarks:

http://www.futuremark.com/products/ 3DMark (2001SE for DX8, 2003 for DX8/9, 2005 for DX9)
http://www.aquamark3.com/ AquaMark 3
http://ovcclan.golden-lighting.co.uk/Direcpll.dll AquaMark 3 Updated .dll
http://3d.rightmark.org/ 3D RightMark
http://www.shadermark.de/ ShaderMark
http://www.daionet.gr.jp/~masa/rthdribl/index.html rthdribl(DX9)

Game Benchmarks:

http://www.fraps.com Fraps

Hard drive benchmarks:

<a href='http://freespace.virgin.net/l.gripper/hdbench.exe' target='_blank'>Hard drive average seek time!</a>

To use:

Download the file. Drag the file into a comand prompt (start->run->type cmd) then add to the line of txt that appears '-s -english 0' the 0 represents hard drive 0=c: and they are number from there down!

Working Aquamark 3 + updated dll download

http://rapidshare.com/files/37342220/AquaMark3.rar

(just click free and type in the verification code)