I'm curious how much faster M2 will be vs M1x. It would be pretty cool if they actually managed to move the new macbook cpu to a smaller 4nm node/etc.
Now that’s an interesting question... Right now the general assumption is that the M chips will follow the same numbering pattern as the A chips. If that assumption is correct then for this first generation we will see something like:
Base M1: Air, Mac Mini and base 13” (with better GPU version on 13” Pro). Possible for base 24” iMac?
M1-X: Assumed to be for the 14”, 16”, 24” iMac, 27” iMac (with a version with better GPU and maybe more CPU cores for the 16” and 27” iMac).
M1-Pro?: For new Mac Pro and possibly a lower spec version for the rumored 32” iMac Pro.
If that assumption is correct then the M2 will just be a replacement for the M1 and will be targeted towards Apples lower end Macs. Then we will get an M2-X and M2-Pro for the higher end machines.
If we use the iPad Pro as an example of what an “X” chip would bring then things are looking good! Benchmarks have shown that the 2018 iPad Pro A-12X can actually edge out the new A-14 in multi-core and can still reasonably keep up in graphics and single core. If we apply that logic to the M1X then we can assume that the M2 will have better single core performance by 10-25% but the M1X will still pull ahead in terms of multi core and especially graphics.
Of course that whole essay was all based on assumption so time will tell but so far it’s looking like the new 14” and 16” may be the kings of multi core laptop performance for some time.