I'm wondering what would be the minimum requirements for a PowerBook G4 to run OS X 10.4 Tiger smoothly. I'm planning on purchasing a PowerBook G4 and I'm wondering simply because I don't want to get a model that ends up lagging throughout 10.4. I'm mainly worried about processor power and the amount of RAM. Thanks for any help! I'm thinking 1.0 GHz as the minimum with 512mb RAM, but I may be wrong.