RyzenAdj

Adjust power management settings for Ryzen Processors.

Based on: FlyGoat/ryzen_nb_smu

Usage

The command line interface is identical on both Windows and Unix-Like OS.

You should run it with Administrator on Windows or root on Linux.

You can write a shell script or bat to do it automaticly.

$./ryzenadj -h

Usage: ryzenadj [options] [[--] args]
   or: ryzenadj [options]

 Ryzen Power Management adjust tool.

    -h, --help                show this help message and exit

Options
    -i, --info                Show information (W.I.P.)

Settings
    -a, --stapm-limit=<u32>           Sustained power limit (10e-3 W)
    -b, --fast-limit=<u32>            Fast PPT power limit (10e-3 W)
    -c, --slow-limit=<u32>            Slow PPT power limit (10e-3 W)
    -d, --slow-time=<u32>             Slow PPT constant time (ms)
    -e, --stapm-time=<u32>            STAMP constant time (ms)
    -f, --tctl-temp=<u32>             Tctl temperature (℃)
    -g, --vrm-current=<u32>           Vrm Current Limit (mA)
    -j, --vrmsoc-current=<u32>        Vrm SoC Current Limit (mA)
    -k, --vrmmax-current=<u32>        Vrm Maximum Current Limit (mA)
    -l, --vrmsocmax-current=<u32>     Vrm SoC Maximum Current Limit (mA)
    -m, --psi0-current=<u32>          PSI0 Current Limit (mA)
    -n, --psi0soc-current=<u32>       PSI0 SoC Current Limit (mA)

demo

If I'm going to set all the Power Limit to 45W, and Tctl to 90 ℃, then the command line should be:

./ryzenadj --stapm-limit=45000 --fast-limit=45000 --slow-limit=45000 --tctl-temp=90

Build

Build Requirements

Building this tool requires C & C++ compilers as well as cmake. It requires privileged access to NB PCI config space, in order to compile it one must have pcilib library & headers available.

Linux

Please make sure that you have libpci dependency before compiling. On Debian-based distros this is covered by installing pcilib-dev package:

sudo apt install libpci-dev

The simplest way to build it:

cmake CMakeLists.txt
make

Windows

It can be built by Visual Studio automaticly. However, as for now, MingW can't be used to compile for some reason.

Required dll is included in ./prebuilt of source tree. Please put the dll library and sys driver in the same folder with ryzenadj.exe.

TODO

• Determine the unit of time
• Add more options
• Code cleanup (The original program was written in C but now it's C++ in order to call VC++ library)