The different models of chips and memory config have very different memory speeds as well. Eg the M4 Max 128GB has a bandwidth speed of 500GB/s+. And that's tr

The different models of chips and memory config have very different memory speeds as well. Eg the M4 Max 128GB has a bandwidth speed of 500GB/s+. And that's true for other models as well. But as you note, the base speed has also increased over the versions.