Quicksilver CPUs will run on Digital Audios for sure (running a dual 800MHz on mine) and also Sawtooth and Gigabit models. They will run slower on the 100MHz busses, unless you are daring enough to overclock (change the bus multiplier) and also the L3 cache on the QS CPUs that have it will not be enabled. Also, you have to run an additional power line because of the change from a four-post to a three-post support. Go here for more info - <http://forums.xlr8yourmac.com/action.lasso?-database=faq.fp3&-layout=FaqLis t&-response=answer.faq.lasso&-recordID=33837&-search> Also, you might want to browse the CPU upgrade forum for Apple CPU while you're there. On 10/10/07 4:02 PM, "Eric Wood" <ewood at izoom.net> wrote: > I should think that depends on which model of G4 Mac you wish to put it > into. I should think that if the socket is physically the same, then > it'll be up to the G4's firmware to support the newer CPUs. I imagine > that having up-to-date firmware from Apple would enable it to work, but > I make no guarantee. It'd be an interesting experiment, I suppose. > > Eric > > On Wed, 2007-10-10 at 17:35 +0100, designme2 wrote: >> can you install a dual quicksilver processor in a G4 mac >> >> >> _______________________________________________ >> G4 mailing list >> G4 at listserver.themacintoshguy.com >> http://listserver.themacintoshguy.com/mailman/listinfo/g4 >> > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4