This has been busting my balls, I have the PC2700 model powerbook G4 that can take up to 2GB of ram. mine came with 2 different types of ram, one with 512mb and one with 1gb, but they were not compatable, so I took the 512mb one out and was going to by another same version of the 1gb ram BUT I can't find it anywere. Heres a picture: http://i.imgur.com/K3qpCeb.jpg Sorry for the lighting BUT as you can see it has 2 chips in each row, 8 in all, seems normal enough, so I googled the ram model number to get to crucial's website and find this: http://www.crucial.com/store/listparts.aspx?model=PowerBook G4 1GHz (15-inch Display PC2700 DDR) looks normal, I'll get the 1gb model BUT LOOK AT IT , IT HAS 4 BIG CHIPS NOT 8 LITTLE ONES WHAT HHOW . Any help? I'm really confused.