czayachkowski at shaw.ca wrote: > Hi, > > Can anyone tell me why I cannot find a G4 upgrade higher than a Power > Mac G4/500. > > Chris > > Not looking hard enough? It's depends on what hardware you are upgrading. There are hardware limitations. I've seen a G4 550mhz for my blue & white G3 that can be overclocked to 600mhz. check xlr8yourmac.com it's a good starting point.