My friend just got a 1GHz 12" Powerbook G4. Right now it only has 256MB of ram, which I understand is PC2100. I have a stick of PC2700 ram from my 15" Powerbook that I was going to sell him, but I wanted to check if it'd be compatible. At first, I was pretty skeptical, but looking on crucial.com they claim that a 1GB stick of PC2700 will work, so would a 256MB stick work too?