i need to find what im running

i need to find something that will tell me what im running in my tower such as motherbroad, cpu, ram etc my brother said he had one but has forgotten the name and it used to tell him the band of things he was also using..

does anyone know a good one?

Try Belarc Advisor, it's free and should do exactly that

http://www.belarc.com/free_download.html

CPUZ is a great program to see your Motherboard, CPU, and RAM.

http://www.cpuid.com/cpuz.php

System Advisor in Windows gives me the information you listed.