AMD and AVX 512 alternative?

This is a rumour/speculation. Take it with a fistful of salt.

Also when I said “some manner of support”, I meant that there is the possibility that AMD will do the same thing they did with Zen 1 and AVX2, implement the decoder, registers, etc. but break all 512-bit wide operations into 256-bit uops, and leave all the execution units 256-bit.
Zen 1 only had 128-bit vector units, but it could execute any code that uses AVX2 and achieve binary compatibility with Haswell and most *lake CPUs.

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Well its x86 old ass spec …It cute Intel wants to play custom assembly instructions on some of their chips not others and there is other x64 chip makers.

That makes the party spoilers.

Depending on the latency to enter/exit AVX and whether or not clocks drop massively ( as per intel) that may still be a legit way to get reasonable performance.

And yeah not even most intel processors support AVX512 yet.

Please open a new thread if you wish to further discuss this topic.