Open source technology media Michael Larabel of Phoronix further tested AMD's Ryzen 7000 desktop CPUs, including the Ryzen 9 7950X and the Ryzen 5 7600X.

2025/07/1120:33:36 hotcomm 1070

AMD Ryzen 7000 CPUs have improved performance when they remain Spectre V2 mitigation enabled by default. Previously, the CPU mitigation measures of Intel and AMD were designed to solve software vulnerabilities, which tend to degrade performance. open source technology media Michael Larabel of Phoronix further tested AMD's Ryzen 7000 desktop CPU, including RyZen 9 7950X and Ryzen 5 7600X.

Open source technology media Michael Larabel of Phoronix further tested AMD's Ryzen 7000 desktop CPUs, including the Ryzen 9 7950X and the Ryzen 5 7600X. - DayDayNews

data results last week showed that AMD Ryzen 9 7950X does not do anything to Linux in its "out of the box" state, which is faster than enabling previous security mitigation measures.

AMD Ryzen 5 7600X CPU Turning off security mitigation in a small percentage of tests can show positive results, mainly among the numerous synthetic kernel benchmarks tested, and in the just-released Linux 6.0 operating system.

However, OpenJDK Java, database workloads, some other workloads and web browser testing can actually negatively affect Ryzen 5 7600X-based test systems when disabling security mitigation.

Open source technology media Michael Larabel of Phoronix further tested AMD's Ryzen 7000 desktop CPUs, including the Ryzen 9 7950X and the Ryzen 5 7600X. - DayDayNews

In Spectre V1, from the perspective of Linux 6.0, Spectre V1 relieves the _user pointer sanitization and usercopy/SWAPGS barriers, while disabling speculative storage bypass for SSBD/Spectre V4 security mitigation through prctl. Spectre V2 has different impacts on the system because it includes Retpolines, IBRS firmware, normal single-threaded indirect branch predictor, conditional indirect branch predictor obstacle, and return stack buffer fill.

The latest AMD Zen 4 architecture is not affected by any known CPU security vulnerabilities.

Larabel also found that disabling Spectre V2 mitigation on his AMD Ryzen 5 7600X CPU test system had a huge negative impact on the performance of the Zen 4 architecture. However, when Spectre V1 security mitigation is disabled, its performance impact is negligible.

Compared with Intel's products and previous Zen cores, the AMD Zen 4 architecture is more optimized and responds better to Spectre V2 mitigation. He advises users to keep settings in default rather than disabling security measures for optimal performance.

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