Oh, I saw on OWC's page under memory where there are "4GB DDR2 PC2-4200 dimms" for sale and was wondering if I were to get eight of those, would the machine go beyond 16GB like the 2006 mac pros after it? Remember the 2006 mac pros had a max of 16GB of memory according to Apple. But, OWC saw it could take up to 32GB? Can the same be said about the G5 Quad and dual core machines? Also, has anyone figured out a way to go beyond 2GB on say a PowerBook G4 Hi-res model or even a MDD G4 1.25 or 1.42? I read somewhere that the G4 can address over 2GB of memory, but Apple did something to the firmware to cripple it so it would only go up to 2GB. Anyone??