Bitcoin mining is a new form of virtual money. The economics of it are fascinating, but the real interest for us is that you can use your GPU to accelerate the mining process, and you'll be shocked at the difference between NVIDIA and AMD GPU performance. If you want to setup a Bitcoin box, this article will get you moving in the right direction.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips