Could somebody please post a link to an explanation of all of the different options on the Mac Pros and what they actually mean? I have a ton of questions and would like to read up on things such as the following: What exactly does 8-core mean? How will 8-core performance compare to 12-core or 6-core performance if both machines have the same amount of ram? Why can some Mac Pros hold more ram than others? What does 2.66GHz mean, and how does it compare to 2.93GHz? Thanks for the help.