Hey guys! I'm a new powermac user here. I just recently bought a powermac g4 and I was wondering what the max RAM, video card, and processors I could put in it and still retain the original architecture. I don't know much about them. I also have the chance to buy a powermac g5 for cheap and I was wondering if it would be wise to go ahead and snag it to replace the g4. What are the main differences in the two, and is the g5 more upgradeable, etc. Thanks so much in advance!