I'm a part of a BMW forum and we do hypotheticals like this a lot. This is something I've been thinking about for a long time and I'd love to hear what others think. A series chips are "low powered" and are getting increasingly fast every year. They are 64-bit, just like Mac. An iPhone 7 multicore Geekbench score is 5538 and an iPad Pro scores a nice 9178. These all have no cooling systems so could probably be a little quicker in a larger body. A current base 13" MBP scores a 8970 and a current regular macbook scores a 6700. Even if Apple didn't change these chips, their A series chips are right about on par with what intel is bringing. I also imagine that when apple designs the chip and the software, even greater optimization could be taken place. I don't know, what do you guys think? I just really want to here what other people think of this possibility if Apple decides to continue to care enough about the Mac.