I have a 1.07 GHz iBook G4 that I recently upgraded from 384MB to 1.25GB of RAM. I did this like 30 minutes ago and have noticed next to no change. I've heard that adding RAM makes the computer go WAY faster, but mine is so similar you wouldn't even notice the change unless you knew that I added RAM. So my question is: What exactly does adding more RAM speed up, and how much. The only reason that I added the RAM was to upgrade from Panther to Leopard, and wanted as many upgrades as possible to do this.