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K tomu anandtech, je to trosku jinak nez jak pise pan Olšan:
zdroj recenze na Rocket Lake: https://www.anandtech.com/show/16495/intel-rocket-lake-14nm-review-11900k-11700k-11600k/7

For v2.1, we also have a fully optimized AVX2/AVX512 version, which uses intrinsics to get the best performance out of the software. This was done by a former Intel AVX-512 engineer who now works elsewhere. According to Jim Keller, there are only a couple dozen or so people who understand how to extract the best performance out of a CPU, and this guy is one of them. To keep things honest, AMD also has a copy of the code, but has not proposed any changes.