# AVX-512 Mask Registers, Again

DevFeed: [AVX-512 Mask Registers, Again](<https://devfeed.tech/articles/avx-512-mask-registers-again-28488.md>)

Original publisher: [Read original article](<https://travisdowns.github.io/blog/2020/05/26/kreg2.html>)

Author: Travis Downs (travis.downs@gmail.com)

Published: 2020-05-26T00:00:00Z

Content type: article

Language: en

Sources: [Performance Matters](<https://devfeed.tech/sources/performance-matters.md>)

Topics: [cpu](<https://devfeed.tech/topics/cpu.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [intel](<https://devfeed.tech/topics/intel.md>)

Tags: [avx](<https://devfeed.tech/tags/avx.md>), [avx512](<https://devfeed.tech/tags/avx512.md>), [blog](<https://devfeed.tech/tags/blog.md>), [compare](<https://devfeed.tech/tags/compare.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [intel](<https://devfeed.tech/tags/intel.md>), [uarch](<https://devfeed.tech/tags/uarch.md>), [vector](<https://devfeed.tech/tags/vector.md>), [x86](<https://devfeed.tech/tags/x86.md>)

## AI overview

The article revisits AVX-512 mask registers by examining an SKX processor die shot. It uses visual comparisons of register-file layouts and related processor dies to investigate whether a highlighted mystery block is the physical mask-register file.

## Source excerpt

Taking a second look at the newly introduced mask registers, this time with the benefit of a SKX die shot from Fritzchens Fritz.