... upgrading from 512mb of ram to 1GB of ram? Currently my computer chugs on occasional things and it doesn't run as fast as I'd want it to. I'm on an iBook G4 1.33, and it's a great computer. I actually tried installing two different types of ram, and neither of them worked leading me to believe that the slot is actually broken. Anywho, is there a big difference when upgrading from 512mb to 1GB in terms of web surfing, open multiple programs at a time, and gaming ect...? Thanks in advance.