But the point stands that Apple can't add instructions to x86 like they can their iOS devices. The emphasis on a low power x86 core may have been driven in the

But the point stands that Apple can't add instructions to x86 like they can their iOS devices. The emphasis on a low power x86 core may have been driven in the short term by a desire to win Apple's business, but power consumption and heat dissipation are (literally) forces of nature that have been around forever. The increasing desire to reduce datacenter costs and increase server density and mobile battery life are very long term trends.