Earlier quoted context omitted.
7nm is considerably less dense than 5nm, since it's increased size compounds across two dimensions. That being said, A13 was indeed on 7nm, as well as the A14x they put in the dev kit. I don't think those benchmark numbers would be competitive against 3D Cache Ryzen or current Alder Lake offerings. Furthermore, I question how far Apple will be able to push Apple Silicon. As we've seen with the M2, when Apple can't ge…
You have in no shape or form supported your claim that Apple gained 200% in performance per watt due solely to the 5nm process.
Developer transition kit, running A12z, 7nm:
https://browser.geekbench.com/v5/cpu/search?q=eperm-d995af6e...
Last-gen Mac Mini, running i7-8700B, 14nm:
https://browser.geekbench.com/macs/mac-mini-late-2018
So, let's do some quick math. Assuming the A12z runs in the same power envelope as the M1, it uses roughly half the power of the preceding Intel chip. That makes sense, since both the performance and efficiency cores are using a much denser process. Generously speaking, both of these chips have a similar performance profile, which leads me to believe that Apple's real 'boon' here was simply switching to a denser node. Comparing IPC across ISAs is largely guesswork, but I'm not convinced that AMD or Intel are incapable of manufacturing 5nm chips that decimate Apple's offerings. Apple hasn't allowed it to happen, so we can't say for sure.