I've only ever used braiins os. But to lower the power usage is VERY easy using it.

Click on menu > configuration > click menu again > performance

Make sure automating is checked and simply input your wattage preference. It will take some time for it to finish tuning and the fans will randomly ramp up and down. But once it's done the hashrate will rise amd the fan rpms will stabilize. Sometimes it can take a few hrs to do initial tuning.