On Friday, August 8, 2003, at 12:59 PM, Robert Jagitsch wrote: > OS X kernel has no code that is optimized for G4. Maybe not the kernel, but what about Quartz, Aqua, Quicktime, etc... All the built in tech that gives an overall feeling of smoothness in the OS X environment? I don't doubt a 900MHz G3 is snappy, but a LOT of OS X *IS* optimized for the G4. I can tell you that with confidence after using a G4 450 Cube with a G3 450 B&W for the last year. HUGE difference between the two. jesse .