I'm a possible switcher in the market to buy a 15" G4 powerbook for my MBA graduate program. I'm already over the whole, "should I wait for the G5 powerbook thing", because I am sure that a maxed G4 will be fine. But my question is, what does maxed out RAM really do for the average user, and what are other ways to get a powerbook G4 to run at it highest performance? Currently, I have a desktop Dell with a 2.4 Ghz Pentium 4 processor and 512 Ram. Will I notice a difference? Thanks, I am an experienced end user with little knowledge about the actual technology. I just know what I like when I use it. Thanks for helping me out.