I don't think Apple's battery life wins are primarily from isa. I think it's largely from better target and process optimization/ecosystem control. Intel (and s

I don't think Apple's battery life wins are primarily from isa. I think it's largely from better target and process optimization/ecosystem control. Intel (and somewhat AMD) make most of their money in servers where what matters is performance/watt in a 100% loaded system. they also are designing for jdec RAM and pcie connectivity (and lots of other industry standards). most of Apple's efficiency advantage comes at the edges, lowering max clock speed, integrating the ram to save power, using custom SSDs where the controller is on the CPU etc.