Right now I'm on an old ibook G4 specs are: Machine Name: iBook G4 Machine Model: PowerBook6,7 CPU Type: PowerPC G4 (1.2) Number Of CPUs: 1 CPU Speed: 1.33 GHz L2 Cache (per CPU): 512 KB Memory: 1.5 GB Bus Speed: 133 MHz Boot ROM Version: 4.9.3f0 It works fine for me but since it's a PowerPC, I can't do some stuff that I want to anymore - like a couple of FB games. Their requirements for macs are intel now. The ibook has plenty of memory for me. I don't keep photos or anything on it. I basically like to play a couple of facebook games, email, and chat on some message boards. that's about it. Do you think the 2.5 GHz model would work for me? My ibook works fine but I find more and more apps are not accepted on it because it is so outdated now.