> With energy efficiency as a primary goal I was expecting way more use of explicit SIMD instructions. I remember reading one paper whose conclusion was runnin

> With energy efficiency as a primary goal I was expecting way more use of explicit SIMD instructions. I remember reading one paper whose conclusion was running SIMD instructions can be bad for power consumption: while you need the processor in a higher power state for longer without, you can keep the SIMD unit powered off. [Edit: That said, I have no idea how true this is for the modern Intel CPUs yet alone Apple's custom SoCs.]