That Sawtooth is a good solid box. Most of them can be OC'd to 550MHz or more, and with a fast G4 upgrade and a video card upgrade, will do 720p HD video. Check to see which version of the Uni-North chip your motherboard has. The rev 3 won't allow dual CPUs, but if you have a rev 7 Uni-North, you can upgrade to a dual G4 and NVidia 6200 AGP (flashed PC) video card. Good score!