There are physical and software restrictions. Earlier G4's (AGP, Gigabit) have four ram slots, so nowadays you could put in 2Gb, but only if you use osx. os9 had a 1.5Gb s/w limit. Later G4's only had 3 ram slots. So using 3 X 512Mb dimms would mean a limit of 1.5Gb. I don't know if you could put bigger dimms in, but that would limit you to 3Gb I would have thought. I find 1Gb is enough. In the classic days a speed-up technique was to add more memory and turn off virtual memory (hard drive based). You cannot do that with OSX. Maybe it does it automatically? --- Richard Klein <richspk at gmail.com> wrote: > In my experience, there are diminishing returns as > you keep adding > RAM. On Windows and Linux computers, I don't notice > much difference > when going beyond 2GB. Is there a G4 that can take > 4GB of RAM? I > thought most of them were limited to 1.5GB, with a > single model > accepting up to 2GB. I'm not familiar with the MDD > models, though. > > -- > Rich > > On Nov 9, 2007 6:52 AM, <arricam at 295.ca> wrote: > > How quick will 4 GB Ram, make for applications. > > ie: Photoshop, FCP,etc. > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com