Even with the hefty Core i5-6500 installed, the Asrock DeskMini is very efficient at idle, drawing just 16 watts.
Under full load, as expected, the Core i5-6500 consumes quite a bit more power than the Core i3-6100T feautred in the Cubi 2 Plus. That said, at 61 watts the DeskMini still consumes very little power.
Stressing the CPU and GPU to the max sees power consumption of the DeskMini climb to 76 watts which is again very low when compared to most comparable desktop systems.