The Intel Core i9 13900K "Raptor Lake" Performance From Linux 5.15 To Linux 6.1

Written by Michael Larabel in Software on 28 November 2022 at 12:00 PM EST. Page 1 of 4. 11 Comments.

For those of you upgrading to an Intel 13th Gen Core "Raptor Lake" system this holiday season, here are some benchmarks looking at how the varying kernel versions affect the Core i9 13900K flagship performance. Testing started using the Linux 5.15 LTS kernel shipped by Ubuntu 22.04 LTS currently and ends with the Linux 6.1 Git snapshot of that kernel nearing its official release and what is expected to be this year's LTS kernel version.

Using the same Intel Core i9 13900K "Raptor Lake" processor running at stock speeds (the CPU frequency difference in the system table amounts to base vs. boost clock reporting differences from the Intel P-State driver) with ASUS PRIME Z790-P WIFI, 2 x 16GB GSKILL DDR5-6000 memory, 1TB WD_BLACK SN850 NVMe SSD, and Radeon RX 6800 XT graphics, a wide range of benchmarks were carried out on this system running Ubuntu 22.04 LTS.

The kernel versions tested were the latest in the respective release series as of testing time:

- Linux 5.15 Default - The current default kernel option of Ubuntu 22.04 LTS when installed out-of-the-box.
- Linux 5.16.20
- Linux 5.17.15
- Linux 5.18.19
- Linux 5.19.17
- Linux 6.0.8
- Linux 6.1 15 November Git snapshot

Raptor Lake Linux Kernel Benchmarks

For the kernel versions besides the "default" 22.04 LTS kernel build, the Ubuntu Mainline Kernel PPA was used for easy reproducibility for seeing what performance benefits there are to Raptor Lake (or not) when moving to newer versions of the Linux kernel.

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