I've made a tool for overclocking BCLK in Linux, but I am unsure which AMD cpus are supported or not. I've only tested it on Ryzen 5 5600 and Ryzen 5 5600H so far. I would really appreciate more ryzen architectures being tested.
Link to the tool:
https://github.com/rafradek/zen-bclk-oc
How to test it:
- clone the repository
- install requirements (dkms and build tools)
- install sysbench
sudo make dkms-installin repository (and check if it compiles)- reboot
- run
echo 100000 | sudo tee /sys/devices/platform/zen-bclk-oc/bclk_khzto ensure default bclk - run
sudo chrt 99 sysbench cpu run --time=1twice - run
echo 99000 | sudo tee /sys/devices/platform/zen-bclk-oc/bclk_khzto reduce bclk by 1MHz - run
sudo chrt 99 sysbench cpu run --time=1twice - check if the events per second from the benchmark after reducing bclk is smaller by 1% than before reducing it