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Re:AMD Threadripper 3970X under heavy AVX2 load: Defective b... by blattimwind on Friday February 21, 2020 @10:28AM (#22383773)
I assume this is due to AVX2 being rare in general-purpose software, so the design "one core is running AVX2 -> switch large part of CPU to AVX2 mode" doesn't hinder use cases where you are hammering all cores with AVX2 code.

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