The Mitigation Impact Difference On AMD Ryzen 9 3900X vs. Intel Core i9 9900K Performance
https://www.phoronix.com/scan.php?page=article&item=3900x-9900k-mitigations&num=1
"The unmitigated Core i9 9900K comes slightly ahead of the mitigated Ryzen 9 3900X results, but avoiding the mitigations on the AMD Zen 2 CPU still helps out a bit. Across the 322 benchmarks, going without the mitigations improved the Core i9 9900K performance by 5.7% while the Ryzen 9 3900X performance unmitigated went up by just under 4%. So, yes, even with these latest Intel/AMD CPUs having some hardware mitigations, there still is some costs involved. Of course, of the 300+ benchmarks, many of them are workloads not involving the kernel or areas where the mitigations play a role. So the rest of this article is looking at some of the relevant workloads of the benchmarks carried out."
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