So far in this series, I have looked in broad terms at how the CPU cores in Apple silicon chips work, and how they use frequency control and two types of core to deliver high performance with low power and energy use. As I hinted previously, their design also relies on specialist processing units and co-processors, the subject of this article. Apple’s Arm CPU cores already pull a lot of tricks to achieve high performance. Among those are prediction of which instructions are to be executed next, ...