Windows 11 vs. Ubuntu 24.04 Linux Performance For The AMD Ryzen 9 9950X
Across Intel SVT-AV1 video encoding there was more uplift going from the Ryzen 9 7950X to 9950X on Ubuntu Linux than there was with Windows 11. In some cases there were regressions in performance from the 7950X to 9950X on Windows but under Ubuntu out-of-the-box were nice generational gains with AMD Zen 5. SVT-AV1 does make use of AVX-512 and does provide Windows reference binaries. With the extremely different results here it's possible that the SVT-AV1 encoder isn't as well tuned for Windows or some other AVX-512 related happening on Windows 11.
SVT-AV1 was showing some of the most distinct differences between Windows 11 and Linux in this testing.
With the x264 video encodeer was also greater uplift from the 7950X to 9950X on Linux than on Windows 11.