Intel has reportedly eliminated AVX-512 enablement on 12th Gen Alder Lake processors altogether. The chipmaker will likely release a new microcode update for motherboards to do this. Intel has focused on bringing the AVX-512 to mainstream consumers with Rocket Lake, which won’t be the case for Alder Lake.
While it is not officially stated that the blue team Alder Lake CPUs support the AVX-512 instruction set, it is possible to enable it by disabling the ‘Gracemont’ efficiency cores and leaving the ‘Golden Cove’ performance cores running. This provides slightly better performance and higher efficiency than standard AVX2 consoles. Efficiency cores have their own advantages in some workloads, but the AVX-512 instruction set is said to offer higher efficiency. For example, the developer of the PlayStation 3 RPCS3 emulator revealed that the emulator performance improved when he enabled AVX-512 on the Core i9-12900K.
According to Igor’s Lab, Intel will push motherboard manufacturers to release a new BIOS update, and that’s about to change completely. As you know, “non-K” 65W processors will be released soon. There are no lower-end performance cores and hybrid architecture, such as Core i5 and Core i3. The technology giant’s move came just before the announcement.
These chips have good potential for entry-level servers and workstations where AVX-512 features can be used. Intel doesn’t want that to happen, and they are doing their best to remove instruction set support from the equation. On the other hand, Igor’s Lab says the standard AVX2 instruction yellows have very stringent thermal throttling on all hybrid chips, which is detected as ‘IA: Max Turbo Limit – Yes’ in HWiNFO.
IgorLabs also tested the power of the AVX-512 on Alder Lake and achieved much better results. The German publication stated that the power efficiency with the AVX-512 is better than with the AVX2.
Note that not all workloads benefit from AVX-512. In this context, there are many workloads that benefit from the interoperability of both performance and productivity cores.
Ultimately, Intel did not incorporate the AVX-512 instruction set in Alder Lake silicon, and the chipmaker is doing its best to definitively eliminate AVX-512 functionality in the near future. To avoid this change, users can stick with the current motherboard BIOS. However, those wishing to upgrade at some point will have implemented updated microcodes that disable AVX-512 support.