Some iBooks can now support 1.25 GB of RAM, though the cost is steep as it requires a 1 GB ram stick see: http://forums.macrumors.com/archive/index.php/t-68817 or http://www.crucial.com/store/listparts.asp?Mfr%2BProductline=Apple%2BiBook&m fr=Apple&cat=RAM&model=iBook+%28G4+1.2GHz%29&submit=Go