You can go back and look at PBS's Computer Chronicles from the mid 90's to see how much of a performance win the 68K to PowerPC transition was. They mention in

You can go back and look at PBS's Computer Chronicles from the mid 90's to see how much of a performance win the 68K to PowerPC transition was. They mention in the introduction that a pre-press shop went from hours to run their bread and butter workflow to about 20 minutes. https://www.youtube.com/watch?v=Ic0dkf1iFOY https://www.youtube.com/watch?v=Ic0dkf1iFOY The Intel transition wasn't really a win on performance, but it was a total win for laptops from a power draw and waste heat perspective.