Black Bird System Info displays detailed information about your PC.

With the freemium version of Black Bird System Info, you can view very detailed information about your CPU, Motherboard, Memory and BIOS. With the upgrade to Pro, you unlock the data for Video, Audio, Network, Hardware and more.

This is really an in-depth look at your PC providing details like serial numbers, OS, Max Clock Speed, and so much more. The one thing that would be useful is an option to print out the details but maybe that will be forthcoming in a future version.