msr-utility VS RyzenAdj

GitHub - cocafe/msr-utility: Little watchdog and cmdline utilities to set Model Specific Registers (MSRs) on Windows via WinRing0 driver, 64+ cores supported

You can use RWEverything or msr-cmd to set the MSRs. They won't persist a reboot/sleep, so creating a task in task scheduler would be a good idea. Add triggers for "at startup" and "on an event" System>Power-Troubleshooter>1 (for wake from sleep).

I use this one: https://github.com/cocafe/msr-utility

Out of curiousity how the 7840HS performs at different TDP, I did some benchmarks using Geekbench 6.2.0. To change the TDP, I've used the software RyzenAdj like so:

TLDR: Ryzen Adj.

A few years ago I did a bunch of poking w/ a 4800H, you can see the actual mechanics of using RyzenAdj. There are also Geekbench 5 benchmarks linked from the doc at different power limits which you can compare to 4800U devices on Geekbench's site: https://github.com/lhl/linuxlaptops/wiki/2020-MECHREVO-Code-...

Note, each laptop manufacturer may choose their different power limits (and like Intel, AMD's curves are largely driven by temperature, so dependent on cooling solution and other settings).

This is a good summary of some of how Ryzen Mobile's power limiting works (actually, read that whole wiki if you're interested in the topic): https://github.com/FlyGoat/RyzenAdj/wiki/Renoir-Tuning-Guide

I'd also look up "AMD PMF" (their equivalent of DPTF) which only recently made it's way to the Linux kernel (but of course, that will include loads of details anyone can look through): https://www.phoronix.com/news/AMD-PMF-CnQF-Linux-6.1

GitHub - FlyGoat/RyzenAdj: Adjust power management settings for Ryzen APUs

Check out https://github.com/FlyGoat/RyzenAdj

If you want to get numbers you can download https://github.com/FlyGoat/RyzenAdj/releases

That app just uses (under the hood) this one https://github.com/FlyGoat/RyzenAdj - g-helper not using that , as it requires admin rights to run :)