Ok, so most of you also use normal PC processors for your setups. So my power usage is not that high in comparison.

But still, a RaspberryPI would use much less and would still be performant enough.

I recommend buying one of these things for finding this out: https://ae01.alicdn.com/kf/HTB1sJx0lrZnBKNjSZFGq6zt3FXao/EU-Plug-Digital-Voltage-Wattmeter-Power-Meter-Consumption-Watt-Energy-KWh-Socket-220V-230V-AC-Electricity.jpg