I have an 1 gigahertz iBook G4 14 in. that I got new really cheap at Microcenter in June. It says on the box and in the manual that it only recognizes up to 640 MB of RAM. I'm wondering-is there a way to get it to recognize a 1 GB chip? Or do I just need to sell it and get a new one? I do love the little thing-it's saved my butt on more than one occasion.