Yes. Best if you can max the memory, to do which you first have to be sure the clamshell has the latest firmware. And then you can have the added RAM exceed the original specification limit. Apple has a KnowledgeBase article about firmware versions. On Fri, 30 Jan 2004, Matthew Burnell wrote: . . . > I'm new to the Mac scene, will I be able to run OSX whatever the flavour on > my G3 300 iBook classic clamshell with a memory upgrade? ie. 128Mb or > higher?