Looking at dual 1.8Ghz PowerMac G5 for replacement of G4 — #2 It can't hurt anything to try some DDR RAM that you have laying around. It may work just fine, but remember the G5 was pickier than just about any Mac when it comes to RAM. And y… 68kMLA PowerPC by Hrududu Wed, 12 Aug 2009 - 18:23