Matt, See Mike Breeden's excellent xlr8yourmac.com website for the answers to some of your questions: <http://forums.xlr8yourmac.com/action.lasso?-response=list.faq.lasso&- database=faq.fp3&-layout=FaqList&Faq_Category=Apple%20G4%20Systems&- sortfield=DateSubmitted&-Sortorder=descending&- maxrecords=100&okaytopost=yes&-search> HTH, Rick On Nov 25, 2005, at 11:37 AM, Matt Pendergast wrote: > How interchangeable are the different G4 processor cards. For > example could I snag a 733mhz and put it in my Sawtooth despite the > different bus speed? It should run slower if it ran at all. How > about physical interference within the case? Voltage differences? > How about the socket itself does it change from family to family or > are they the same for all G4's? > Thanks in advance! > Matt