Hardware Check

CPU-Z

Utility that gives CPU and motherboard information.
http://www.cpuid.com/cpuz.php 

Free PC Audit

Free PC Audit is a freeware system, hardware and software information tool. It extracts details of all components of the PC, shows installed software with version and product key.
http://www.misutilities.com/free-pc-audit/

PC Wizard

PC Wizard gives system information, detects your hardware and is able to analyze and benchmark your computer system.
http://www.cpuid.com/pcwizard.php

SiSoft Sandra Lite

Sandra the System ANalyser, Diagnostic and Reporting Assistant is an information & diagnostic utility. It provides information on your hardware, software and other devices whether hardware or software.
http://www.sisoftware.net/
Go to the website and select 'Download & Buy'. Links to download the Lite Version can be found there.