AVX2 vs AVX-512: Width Is Only Part of the Story
AVX-512 doubles maximum vector width over AVX2 and adds masking plus a richer register model, but the fastest choice depends on instruction mix, CPU implementation and memory behavior.
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x86
AVX-512 Explained: Wider Vectors, Masks and More Registers
AVX-512 is more than 512-bit arithmetic. Its major architectural changes include opmask predication, a larger vector register file in 64-bit mode and a family of optional feature subsets.
AVX2 Explained: 256-Bit SIMD on x86
AVX2 extends x86 packed SIMD with broad 256-bit integer support and other useful operations. Learn what it adds, where it helps and where its limits begin.