RyzenAdj VS undervolt

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 :)

Macbook Airs of that era ran Sandy Bridge processors, so, assuming apple didn't factory under volt them, you can usually get away with at least a 100 mV under volt, which would increase all core performance, extend turboboost time, and increase battery life.

it being Debian means you can also easily install the liquorix kernel from the MX control panel, to get some decent gaming focused optimizations. I'd also suggest checking out https://github.com/georgewhewell/undervolt and considering undervolting your laptop, as it's about the only performance hack you can do with older, low powered laptops. It makes a big difference on the chromebooks I was mentioning, lower battery usage, lower temperature, and able to run at full boost speed with no real issues. That, and configuring zram with zstd compression and zram-size=ram can be a real gamechanger on machines with low memory. Also, it might be worth it to just get some more memory, if that's an option, but I couldn't tell you without knowing more about the laptop.

undervolt on linux

With intel you can easily use intel undervolt to extend battery life (I use this on my T580: https://github.com/georgewhewell/undervolt

I dualboot Linux Mint and Windows 10 on my laptop. I already use Throttlestop for undervolting on Windows, and wish to do the same on Linux. So far the only ways to undervolt an Intel CPU in Linux that I have found are 3 similar softwares based on the same project: https://github.com/mihic/linux-intel-undervolt . Out of these 3 the only one I could understand to install was this one: https://github.com/georgewhewell/undervolt . According to the documentation, it should work with my CPU.

Hello all. I'm using a Predator Helios 300 (2020) and was using Throttlestop before switching to Nobara. Stumbled upon this undervolting program on GitHub and just wondering if this is safe to use given that Nobara is using a custom kernel? My laptop tends to go around 95ish in temps while gaming and I know that's normal for a gaming laptop, I just want to lower it a bit.

I used undervolt (https://github.com/georgewhewell/undervolt). Not sure about intel-undervolt, didn't try it.