to sa neukáže, hlavne treba vypnúť Spectre patche, keďže Zen2 netrpí ani tímy spectre, čo AMD trpelo v minulosti

The Zen 2 results come in as a bit of a surprise. With Zen 2 featuring hardware-based Spectre and Speculative Store Bypass mitigations, one might reasonably think that the relative performance impact is less than with the original Zen/Zen+ processors, but at least in our tests under Linux that wasn't exactly the case

With the Sockperf test stressing the throughput performance of the kernel's socket interfaces, the mitigations caused a 20% hit to the Core i9 9900K while the Ryzen 7 3700X saw a 13% hit and the Ryzen 9 3900X a 10% hit in the default state.

Interestingly though and what I alluded to in the introduction, the Ryzen 7 2700X saw a 5.5% hit and the Ryzen 9 2990WX a 6.2% hit.

The socket activity test is another example of the Zen 2 CPUs appearing to take a greater hit from the mitigations than Zen 1. The Ryzen 7 2700X saw a 5% hit to the socket performance with the out-of-the-box mitigations while the Ryzen 7 3700X was at 11%, but at least it still came out faster than its predecessor.
https://www.phoronix.com/scan.php?page=article&item=amd-zen2-spectre&num=1

https://www.phoronix.com/scan.php?page=article&item=amd-zen2-spectre&num=1

Ano, mají.
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Asi mají nějaké aktivní prvky zlepšující signal...
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