Comment by adrian_b

No, that has changed.

About a half of year ago Intel has announced that they will mandate the 512-bit vector width and the full AVX-512 a.k.a. AVX10 support in all future CPUs, starting with Nova Lake. This includes all E-cores that will succeed the current Skymont/Darkmont cores, which have been the roadblock to general AVX-512 adoption.

Obviously, they were forced to do this to align with AMD. Moreover, Intel has announced that they will coordinate the future ISA extensions with AMD and with the major customers, so that all future Intel and AMD CPUs will remain mostly ISA compatible, at least for the user applications.

Not long ago, there has been published a joint AMD-Intel whitepaper about the future "AI Compute Extensions for x86", which will be present in future AMD and Intel CPUs for accelerating AI inference, extending the AVX-512 ISA, and which are similar to the Advanced Matrix Extensions currently supported by some of the Intel server CPUs, but the new ISA extensions are better compatible with AVX-512.

This document demonstrates that at least for now Intel and AMD have understood that implementing a compatible ISA is their greatest moat against Arm and other competitors, so they should better coordinate their extensions instead of trying to pull in different directions.