Rob, Go to http://eshop.macsales.com/ and follow the prompts to processor upgrades. The one I selected two years ago was the Mercury 1 GHz and it may have been discontinued > Date: Mon, 26 Feb 2007 20:53:32 -0500 > From: "Rob Marles" <rmarles at rogers.com> > Subject: RE: [G4] Re: G4 450 Harddrive Question > To: "'A place to discuss Apple's G4 computers.'" > > How/where do I get the upgrade? > > Thanks > > -----Original Message----- > From: g4-bounces at listserver.themacintoshguy.com > [mailto:g4-bounces at listserver.themacintoshguy.com] On Behalf Of Richard > Kriss > Sent: Monday, February 26, 2007 8:46 PM > To: G4 listserver > Subject: [G4] Re: G4 450 Harddrive Question > > Rob, > > I have a Mac G4 that started life as a G4 450 AGP. I added the Mercury 1 > GHz processor upgrade and it has been working perfect. Best money I ever > spent on a Mac. > > Works great! > > Machine Name: Power Mac G4 (AGP graphics) > Machine Model: PowerMac3,1 > CPU Type: PowerPC G4 (2.1) > Number Of CPUs: 1 > CPU Speed: 1 GHz > L2 Cache (per CPU): 256 KB > L3 Cache (per CPU): 2 MB > Memory: 1 GB > Bus Speed: 100 MHz > Boot ROM Version: 4.2.8f1