How macOS can not only regulate CPU cluster frequencies to control power use, but also moves threads to E cores. This reduces power use of over 50 W to less than 13 W.
Apple silicon
Which versions of macOS can run in a VM? Can they run Intel apps too, and Intel macOS? How well do they perform? Can they access iCloud and run App Store apps?
Provides maximum frequencies for E and P cores in each of the M-series, a table of all frequency steps used by current M-series chips, and explanation of how they have come about and their importance.
It took over 6 months before creating bootable external disks was fairly reliable, and even then there were unexplained failures. Did someone fail to tell us something?
In any M-series family, I’ve always assumed that P and E cores were the same, whether it’s a base or Ultra variant. That isn’t correct, though.
Low Power mode operates pre-emptive control of CPU core frequency to deliver the best compromise between low power use and performance. Here’s how it does so.
Two important catches that can cause a macOS installation to fail in Apple silicon: using the DFU port, and not setting up ownership correctly. Both are explained here.
Some support USB4, others don’t. Some share the controller, others don’t. Some support DFU mode but then can’t be used to create a bootable external disk on Apple silicon.
Which versions of macOS can you ‘dual boot’, should you install them all on the internal SSD, or is a bootable external disk better, and when would you need to virtualise?
How CPU P cores have a frequency limit applied in Low Power mode, and how macOS regulates power use or temperature by controlling core frequency.
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