Beware! Undervolting can cause system crashs and this could cause data loss! Use it on your own risk!   Undervolting Undervolting reduces the power usage of your CPU. Depending on the CPU and used settings 5 to 10W on full load and 0 to 1W in idle.   Important: At first you should stop your array to avoid data loss (and to avoid parity check on reboot)!   Requirements (install them through NerdPack) - Python 3 - pip - setuptools