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    Doesn’t seem to be a lot of content here. Right now if you wanted to move away from Intel for whatever reason, the only viable choice for the {x}Pro lines isn’t ARM, it’s Power. And there’s no way they’re going to do that. There’s also no way in hell Apple will allow the Mac line to fragment into two separate architectures unless they’re 100% compatible. Fat (or mostly-compiled) binaries and identical frameworks would be the order of the day.

    In addition to that, I don’t know if anybody’s noticed but they’re pretty clever over at Intel. I’ve yet to see anything resembling a proof that ARM scaled up to compete with 86/Power for processing would still retain its power (as in watts) advantage.

    My prediction remains: The cheap machines will go ARM, and soon (by mid-2020). Apple has emulated CPUs smoothly before, and Windows 10 does it now. The Pro machines will not (for a few years at least), although I wouldn’t be surprised to see Apple make their own GPUs for them, and to possibly even slap 4-or-5-ipads’ worth of ARM+GPU into the Mac Pro (as co-processors) for GPGPU loads. Jobs that are “embarrassingly parallel” are the kind of things you want to run with a pro machine, but you won’t give up single-threaded performance that only deeply pipelined complex CPUs like 86 and Power can give you.

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      Maintaining two archs of MacOS will be too taxing. I really doubt they’ll do architecture switch for only half the products.

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        There’s no way they don’t already have a full build for ARM hidden away somewhere, and probably still maintain one for Power as well, just to keep the code portable. They had it running secretly on Intel for years before they switched.

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          Notice how they switched to Intel wholesale and sunset the old arch as fast as they could.