Intel now deactivates AVX-512 capability on new Alder Lake CPUs

by Hilbert Hagedoorn on: 03/03/2022 02:53 PM | source: tomshardware | 42 comment(s)

And that would be fused on a hardware level. Whilst AVX-512 was not officially supported on the chips, it was useable on Alder Lake on several motherboards.

According to an unnamed source, AVX-512 has been fully disabled in recent editions of Intel's Alder Lake non-K CPUs. This was later confirmed by Intel. "While AVX-512 was not fuse-disabled on select early Alder Lake desktop devices," a company official informed Tom's Hardware, "Intel expects to do so on Alder Lake products in the future."

Most 600-series motherboards later received an upgrade that eliminated official support for AVX512. Surprisingly, several firms attempted to provide partial support via secret BIOS settings. However, this is expected to change shortly, since the revised Alder Lake silicon will no longer have this area of the device physically activated. If you want AVX-512 capability with Intel's latest designs, you'll have to upgrade to its more costly Xeon CPUs. Meanwhile, AMD is said to be adding AVX-512 support to its Zen 4 processors, which is an unusual twist if Intel continues to refuse to support the instructions on consumer devices.

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