The Intel Core i9-12900K has been discovered being tested on Windows 11 where it produced up to double-digit performance gains over the same tests on Windows 10. However, despite the exclusive boost from Microsoft, the 16-core Alder Lake chip still lagged behind an older rival in the form of the AMD Ryzen 9 5900X.
https://www.notebookcheck.net/Windows-11-gives-Intel-Core-i9-12900K-exclusive-boost-in-benchmark-comparison-but-the-Alder-Lake-chip-still-lags-behind-the-AMD-Ryzen-9-5900X.571096.0.html
The Golden Cove SIMD is being limited to avx2 on Alder Lake ... 256 bit... to make it consistent with the Gracemont limitation.
On Sapphire Rapids, Golden Cove's SIMD is not only 512 bit, but they put on dual units per core... so effectively 4x the SIMD processing per core vs Alder Lake.
They also added AMX matrix processing, which is focused on GEMM for int8 and bf16 operations, and designed to increase performance by 8x over the SIMD dlboost.
So, long story short: If you want high performance SIMD, you are buying the server chips or perhaps waiting for the HEDT or WS products based on the Sapphire Rapids' Golden Cove, with its 4x SIMD and matrix operations.
It is very unfortunate that Intel can't best AMD yet, one year past Ryzen 5900x/5950x launch. I bet there is a lot of people waiting for Intel to launch a great CPU so people can buy AMD cpus at a lower price.
Quote from: Valter on October 11, 2021, 13:41:30
It is very unfortunate that Intel can't best AMD yet, one year past Ryzen 5900x/5950x launch. I bet there is a lot of people waiting for Intel to launch a great CPU so people can buy AMD cpus at a lower price.
It seems unreasonable to expect AMD to go even lower in prices than they were with the 3000 family. It could happen, but I don't think that was the plan or expectation. IMHO, the expectation was that Intel might have to come down in price to compete and that AMD will happily go up in price after gaining enough market share. Waiting around for even lower prices seems silly (putting aside shortage induced fluctuations).
Furthermore, AMD CPUs were handicapped due to L3 cache latency (up to 3x more latency and 6x after a patch made it worse) on Windows 11 and CPPC issues.