AMD Ryzen Z1 Extreme: Windows vs. Linux CPU Performance

First up happened to be the DaCapoBench OpenJDK benchmarks. Interestingly by chance it happens to immediately reflect the benefit of AMD P-State over the ACPI CPUFreq CPU frequency scaling driver on the Ryzen Z1 Extreme. Ubuntu 23.04 went from being slower than Windows 11 for this Java workload to now being slightly faster. The ACPI platform profile hadn't made much of a difference in this particular test.

It really depends upon the workload though for whether switching the CPU frequency scaling driver and/or ACPI platform profile make much of a difference.

For JPEG-XM image encoding for example the ACPI platform profile was important for further extending Linux's performance advantage over Windows 11.

But in the case of JPEG-XL, switching to the performance profile drove up the SoC power consumption from a 15 Watt average to 23 Watts and in turn yielded a worse performance-per-Watt.

The JPEG-XL multi-threaded workload also saw the core SoC temperature raise by 12 degrees with the performance ACPI Platform Profile and peak now at 83 degrees.

At least for Linux fans, the Ryzen Z1 Extreme didn't seem to be at any fundamental disadvantage compared to Windows for this new specialized SoC.