As a hobby I do lots of video editing/effects type stuff. Recently I have started to look for a new beefier system. I've been scanning through video forums searching for hardware recommendations. I came across one thread about SGI's stuff and how it's tops in speed when it comes to graphics work. Although SGI's workstations are way way way out of my budget, Im just curious what's with their hardware layout that makes them so superior to PCs and Macs when it comes to graphics?