You mean like this? DIMM0/J21: Size: 256 MB Type: SDRAM Speed: PC100-222S DIMM1/J22: Size: 256 MB Type: SDRAM Speed: PC133-333 DIMM2/J23: Size: 256 MB Type: SDRAM Speed: PC133-333 DIMM3/J24: Size: 256 MB Type: SDRAM Speed: PC133-333 If so, no. :) Eric Carl Williams <calexander at netspace.net.au> wrote: I have a G4 400 (AGP Graphics) and it has 256MB of PC100 SDram. Will I have problems if I install PC133 SDRAM alongside? _______________________________________________ G4 mailing list G4 at listserver.themacintoshguy.com http://listserver.themacintoshguy.com/mailman/listinfo/g4 Listmom is trying to clean out his closets! Vintage Mac and random stuff: http://search.ebay.com/_W0QQsassZmacguy1984 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/g4/attachments/20070228/2fcc941e/attachment.html