Originally posted by numacross
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I do not know what is wrong in those benchmarks, but it certainly is not caused by AES implementation. Maybe it is something specific to XTS.
In all the benchmarks that I have ever seen, through several generations of Intel and AMD CPUs, Ryzens/EPYCs were faster at AES than Intel CPUs.
I own several Intel Xeons and a couple of Ryzens (3700X & 5900X), and the AMD CPUs are clearly faster at AES.
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