I recently made the switch to as-rock 7900 XT Phantom Gaming and decided to give undervolting a try using CoreCtrl. After reading through the documentation on GitLab and watching a few tutorial videos, it seemed pretty straightforward.

I set the voltage offset to -95mV, adjusted my min/max GPU clocks, and left the memory settings untouched. I also cranked the power limit to the max.

Before the undervolt, I was getting around 70 FPS @ 1440p Ultra in Cyberpunk, with power draw peaking up to 330 watts and temperatures hovering around 68-70°C. After the undervolt, I’m still hitting the same FPS, but the card now draws between 150-200 watts, with temps staying around 55-60°C.

Is it really this easy? Would love to hear if anyone has additional tips or tricks for further optimizing my setup!

Hi AMD users.

I've seen over the past weeks some requests for a linux port of AMD Adrenalin Software on some threads of this subreddit. Turns out that last month I released a wattman like application to control AMD GPUs under GNU/Linux. Its name is CoreCtrl.

Here is a video overview of its main features.

Try it if you want. Always prefer to install it from your distribution packages (when available). Check the project page for more info. Also, you may want to read some parts of the wiki, specially the Setup, AMD GPUs and FAQ sections. Please, read the last one if you use fancontrol on your system.

Keep in mind that CoreCtrl was released recently. If you find application related bugs, please go to the issue tracker on the project page, search for similar bugs and report them if you cannot find any opened issue (please, avoid to write in closed issues, your reports could be unnoticed if you do so).

Hope you can find it useful.

NOTE: I will be away from my computer for over a week, so be patient if you report bugs.

Wanted to post and leave this here for other who may been having the struggle with getting core CoreCtrl up and working on Nobara like I did. the Gitlab doesn't have all the correct instructions for this distro.

REMINDER: CoreCtrl for GPU advanced settings like this guide shows only works for AMD GPU's. NVIDIA GPU's don't support it on Linux.

1: Install it, duh. then run it to make sure it works too.

sudo dnf install corectrl 

2: Create a text file and name it "90-corectrl.pkla" in the file destination bellow.

/etc/polkit-1/localauthority/50-local.d/90-corectrl.pkla

with the following contents:

[User permissions] 

Identity=unix-group:your-user-group Action=org.corectrl.* ResultActive=yes

The "your-user-group" is your user group which should be the first bit of the command line in a terminal that appears before typing.

EX:

[tc@TC ~]$

Therefore~ "tc"

[User permissions]

Identity=unix-group:tc Action=org.corectrl.* ResultActive=yes

In my case.

3: Time to edit the grub and this is where it deviates from the Gitlab guide a bit cause Fedora stuff.

In terminal enter

sudo gedit /etc/default/grub

Then as the guide mentions you need to enter

amdgpu.ppfeaturemask=0xffffffff

to the GRUB_CMDLINE_LINUX_DEFAULT= as instructed. it should look something like this.

GRUB_CMDLINE_LINUX_DEFAULT='quiet splash resume=UUID=ec70262b-7e5d-4402-a48b-c22a855757c1 amdgpu.ppfeaturemask=0xffffffff'

Then regenerate the bootloader with this command

sudo grub2-mkconfig -o /boot/grub2/grub.cfg

Just adds 2 in different places in the line so Nobara can do the correct thing. the command in the Gitlab page will just tell you "grub-mkconfig: command not found..." Thank you LionHeartP on the Nobara Discord for helping me with that.

4: Just reboot and then you should be good to go for Corectl on your AMD GPU. Enjoy!