I dont know about the RAM soldered to the motherboard, I know my iBook was like that, but my Powerbook has two sodimm slots, I know because I just put 2GB on it.
All you freaking about Mac going x86 have nothing to fear. its not full swing before mid 2007. Xcode tools has an option to build binaries for both PPC and Intel in the same binary. That is one app to double click launches on both processors. Its awesome. The guy that lives next door is a Mac developer and has the new dev workstation with a 3.6GHZ Pentium 4 in it. We played with some of his code and ran things on my G5, the powerbook and the intel native machine as if it was all the same. You can run SOME PPC apps on the intel machine as well through emulation, but its not good for anything other then things like Office apps, photoshop ect. Universal binaries will be comming out for several years for both machines. Dont forget MILLIONS of PPC Macs are out there still.
