SubZeroTech takes a very quick look at a program that will give you a very quick PC audit called the Belarc Advisor (I don't think you'll need much to make up your mind as to whether this is worth it to you or not and you can download it here).

In about 15-30 seconds the program Belarc Advisor tells you every single thing about your computer and best of all…IT'S FREE! This baby will tell you your OS, Motherboard brand and model, CPU brand and speed, and a whole ton more! This is a great tool for some who just acquired a computer and trying to figure out what's inside their machine.