AVA Direct's custom GT3 series is aimed squarely at the LAN party gamer, and won't throw out your back with its diminutive size and weight. It's built with portability in mind; the case is small, it comes with a handle and the thing weighs less than 20 pounds. And because it's custom, you can build it up as you please at AVA Direct's Web site. Finally, due to the fact that the GT3 is more a tiny desktop than a true SFF (Small Form Factor) machine, in theory, it shouldn't sacrifice much power for the sake of portability...