Check the freedesktop site/repos. It was recently updated with support for 20, 30 & 40 series reclocking and hardware support. Runs pretty snappy on a 4080 and Plasma wayland. NVK, the vulkan part of it has been coming along nicely the past fee months as well.
Overclocking isn’t supported on newer boards with nouveau. You would need to use Nvidia’s binary driver for that. Look at the nvidia-smi command for doing it on wayland. I have not actually tried adjusting the clocks, just the power limit on Wayland though. Look at the”--application-clocks=“ cmdline option to it.
Yeah, NVK is their Vulcan driver. The rest of the user space Nouveau handles OpenGL (though they might just is Zink in the future, which translates OpenGL calls to Vulcan).