Hi, I run Leopard on my PowerMac G4 Sawtooth. It has 1GHz cpu and 1.3GB RAM. Performance is acceptable, in fact I don't notice any difference from Tiger for the things I do. Your memory size is a little small for Leopard. I would suggest at least 1GB. Also you will need a graphics card that is quartz extreme/ core animation capable for some applications: Time Machine (TM is one of the main reasons to use Leopard IMO), Front Row, or DVD Player. The stock ATI Rage 128 card will not do it. I added a Radeon 9800 Pro and it works fine. Eric S. Robert Walker wrote: > Hello, > > Has anyone tried to run Leopard on their G4? > I am currently using an upgraded AGP G4. > > > Machine Name: Power Mac G4 (AGP graphics) > Machine Model: PowerMac3,1 > CPU Type: PowerPC G4 (3.3) > Number Of CPUs: 1 > CPU Speed: 1.4 GHz > L2 Cache (per CPU): 256 KB > L3 Cache (per CPU): 2 MB > Memory: 640 MB > Bus Speed: 100 MHz > > > ------------------------------------------------------------------------ > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4