Dear All, I'm trying to find benchmarks for a 1ghz PB G4 put up against all the current versions of the macbook, plus the macbook air. Is there one figure that equates to overall fastness? i mean, can one ever say that 1 computer is twice as fast as another? Obviously in many benchmarks the macbooks will far outperform the G4. But i'm interested in just how much faster they are with the switch to intel. i did a search but nothing really compares them all.... definitively.