The Wooting one is, to my knowledge, the world's first true tenkeyless, analog mechanical keyboard. It features pressure-sensitive keys that are specifically designed to give PC gamers the same benefits console gamers have access to. You can move at any speed you'd like, which is particularly useful for racing games, first-person shooters and stealth titles.
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