I love my iMac and iBook, but when my buddies ask me who makes the processor I am unsure. I have heard that Motorolla makes some of them and that IBM makes some of them too. Is the PPC like a coop effort or does one company make one (ie; G3 made by one company; G4 made by the other) or do both make both and if so which one do I have if anyone knows just by the models. Well thanks for the help, my models are listed below. Catch you all later!