If intel get on a smaller node that would benefit these wide registers energy wise. Like early AVX2 also would downclock, and run hotter. Its one of the reasons

If intel get on a smaller node that would benefit these wide registers energy wise. Like early AVX2 also would downclock, and run hotter. Its one of the reasons the VZEROUPPER instruction exists so the hardware can power down the upper half of these registers when not in use. If recall AVX2 on amd was basical just running 128bit hardware twice till Zen 2. As the nodes get denser i am sure AVX512 will perform better power and heat wise. As for AMD adding support I am sure they will just for compatibility reason.