no. the single processor motherboard for the G5's is completely different than the dual processor. though at some point in the future, if G5 processors are made available to upgrade manufacturers, there will probably be some kind of upgrade for the single processor G5s. sandor On Mar 12, 2004, at 10:03 AM, jgvp wrote: > This really is a question about the G5, which I am considering > upgrading to. I was wondering that , since in the Dual Processor > models there are in fact two separate bays each with its own fan for > each of the processors, can one later add a second CPU to a single > processor model, and if so, where can one obtain the second CPU ? I > have searched the Apple site to no avail. Thanks. > > > ----------