I'm going to go with a combination of the 5nm feature size, simplified instruction set, an architecture that's low-power by default so it doesn't need to be thr

I'm going to go with a combination of the 5nm feature size, simplified instruction set, an architecture that's low-power by default so it doesn't need to be throttled for heat/power, and the use of many types of specialized cores to better match workloads with cpu power. It's a modern architecture in the way that x86 just isn't as a 40-year-old architecture that has to maintain backwards compatibility.