I found some parts to upgrade thePower Mac G4. Here's what we can do with them, and how they can enhance our G4 experience. I also mispronounce Radeon at least six times. I actually read the wrong spec sheet for this model, it can actually have 1.5 GB of RAM. Interestingly enough, I have just enough extra RAM to ACTUALLY max this out, but I don't think you'd be able to tell the difference if I had.