AMD Ryzen 9 9950X Power/Performance With CPU Frequency Scaling Driver Tunables

Written by Michael Larabel in Software on 4 September 2024 at 02:53 PM EDT. Page 4 of 5. 8 Comments.

👁 Stargate Digital Audio Workstation benchmark with settings of Sample Rate: 44100, Buffer Size: 512. acpi-cpufreq performance was the fastest.

👁 Stargate Digital Audio Workstation benchmark with settings of Sample Rate: 44100, Buffer Size: 1024. acpi-cpufreq performance was the fastest.

The Stargate digital audio workstation software was seeing slightly better performance out of using the ACPI CPUFreq driver rather than AMD's tailored amd_pstate driver making use of ACPI CPPC.

👁 Timed Linux Kernel Compilation benchmark with settings of Build: defconfig. amd-pstate-epp powersave, EPP balance_performance was the fastest.

👁 Timed LLVM Compilation benchmark with settings of Build System: Ninja. amd-pstate-epp powersave, EPP balance_performance was the fastest.

Code compilation workloads on the Ryzen 9 9950X weren't impacted measurably by the various options tested.

👁 Selenium benchmark with settings of Benchmark: Kraken, Browser: Firefox. amd-pstate-epp powersave, EPP balance_performance was the fastest.

👁 Selenium benchmark with settings of Benchmark: Jetstream 2, Browser: Firefox. amd-pstate-epp powersave, EPP performance was the fastest.

👁 Selenium benchmark with settings of Benchmark: SilverBench, Browser: Firefox. amd-pstate-epp powersave, EPP performance was the fastest.

In the Firefox web browser benchmarks there was little fluctuation in the power and performance with the different tunables tested.

👁 Selenium benchmark with settings of Benchmark: PSPDFKit WASM, Browser: Firefox. amd-pstate-epp performance, EPP performance was the fastest.

ACPI CPUFreq Schedutil as the former AMD Ryzen default configuration was slower than the rest for this WebAssembly benchmark.

👁 Selenium benchmark with settings of Benchmark: Speedometer 3.0, Browser: Firefox. amd-pstate-epp performance, EPP performance was the fastest.

With the Speedometer 3.0 benchmark running in Firefox there was a strange case of ACPI CPUFreq performance enjoying much lower power use than the other tested configurations and in turn the best performance-per-Watt.

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URL: https://www.phoronix.com/review/ryzen-9950x-amd-pstate/4

⇱ AMD Ryzen 9 9950X Power/Performance With CPU Frequency Scaling Driver Tunables Review - Phoronix

AMD Ryzen 9 9950X Power/Performance With CPU Frequency Scaling Driver Tunables