Hi, I have a 2.0ghz Macbook 5,1 (unibody, late '08 etc) with 2GB and the standard HD. I was wondering, If I had a 2.0GHz PowerMac G4, (with max ram, and a decent GPU) could it be up to speed with the Macbook for FCE4 renders and stuff? I know the G4 has a PPC chip instead, but were it is expandable for ram, video cards etc, could it be a better alternative?