I have a Power Mac G3 B&W 300mhz and 768mb ram and a G3 iBook 900 mhz with 256mb of RAM. I've decided its time to upgrade seeing as a new class Im taking requires me to use iMovie and possibly final cut at home. I have found a Power Mac G4 450mhz 512mb ram. would this be sufficent for my needs and would it faster than the computers I have now. BTW over the course of the next few months I'll probably drop a new processor in it 1ghz and 1.5 gigs of ram and a 128mb vga card.