> From: Markus Fritze <mfritze@...> >Nope, the bus performance is the critical factor. I tested the first G4 code >in a gray G3 (with a 300MHz G4 and 66MHz bus clock) and the performance is >at least 50% slower! This is the reason why I would recommend the sawtooth >machines (G4/400 and G4/450 at the moment): the have a much faster memory >bus! Hi Markus - presumably though, a G4 will still show some improvement over a G3 at the same clock rate, motherboard speed, memory bandwidth etc? ie Logic w/Altivec optimisations on a G4 card in an older machine would perform better than on a G3 card at the same speed in the same machine? I'm not quite ready to ditch my Umax S900 in favour of an Apple G4, I was thinking I'd put a G4 upgrade in it until mid next year or so... John Pitcairn