There's performance per watt and nobody bothers to compare on this.
The scary things are:
- Apple's one-year cadence which I don't think that AMD or Intel can match
- Apple can optimize any specific application that they care to by analyzing it, figuring out the hotspots, and building specific hardware for the hotspots and then putting in an API to access it. Intel and AMD can't do this alone as they don't own the operating systems.
About why Intel and AMD can't do like Apple:
https://debugger.medium.com/why-is-apples-m1-chip-so-fast-3262b158cba2
"Here we get a big problem with the Intel and AMD business model. Their business models are based on selling general-purpose CPUs, which people just slot onto a large PC motherboard. Thus computer-makers can simply buy motherboards, memory, CPUs, and graphics cards from different vendors and integrate them into one solution.
But we are quickly moving away from that world. In the new SoC world, you don’t assemble physical components from different vendors. Instead, you assemble IP (intellectual property) from different vendors. You buy the design for graphics cards, CPUs, modems, IO controllers, and other things from different vendors and use that to design an SoC in-house. Then you get a foundry to manufacture this.
Now you got a big problem, because neither Intel, AMD, or Nvidia are going to license their intellectual property to Dell or HP for them to make an SoC for their machines.
Sure Intel and AMD may simply begin to sell whole finished SoCs. But what are these to contain? PC-makers may have different ideas of what they should contain. You potentially get a conflict between Intel, AMD, Microsoft, and PC-makers about what sort of specialized chips should be included because these will need software support.
For Apple this is simple. They control the whole widget. They give you, for example, the Core ML library for developers to write
machine learning stuff. Whether Core ML runs on Apple’s CPU or the Neural Engine is an implementation detail developers don’t have to care about."