With no clear performance or efficiency benefit derived from moving to ARM, it doesn’t seem likely Apple will be ditching Intel wholesale for its notebooks, even two years from now. However unlikely, though, that doesn’t necessarily mean that Apple won’t use ARM processors for future Mac-like computers.
If this move happens it’s only going to be for low-end Macs, but even then keep this in mind:
Effectively, Intel could make a 22nm clone of Sandy Bridge processors with identical performance at close to 50 percent of the power requirements. Imagine the performance of today’s MacBook Pro with something like double the battery life—there’s a lot more to it than just the CPU power requirements, but you get the idea.
Hello new MacBook Air.