Remember though that performance doesnt scale linearly with power though - a 15W laptop CPU is only something like 30% slower in single threaded performance than a 95W desktop CPU (which is what the discussed benchmark is measuring).
ARM is pretty unlikely to oust x86 in Windows PCs any time soon. Even if Intel continues to struggle to catch up to TSMC's fab advantage, AMD is making pretty compelling CPUs using the same fabrication node as Apple. And really, Windows is stuck with x86 largely for compatibility reasons - emulation would be both a performance and power drag. If ARM is destined to defeat x86, its probably going to have to win in the datacenter first, depriving Intel (and possibly AMD, soon) of their highest margin sector.
ARM is pretty unlikely to oust x86 in Windows PCs any time soon. Even if Intel continues to struggle to catch up to TSMC's fab advantage, AMD is making pretty compelling CPUs using the same fabrication node as Apple. And really, Windows is stuck with x86 largely for compatibility reasons - emulation would be both a performance and power drag. If ARM is destined to defeat x86, its probably going to have to win in the datacenter first, depriving Intel (and possibly AMD, soon) of their highest margin sector.