Background of the question:
I had an internet failure whereupon the rig ran for several hours without internet at over 500W.
Under Windows each graphic card is running idle with max. 10-30W but not with over 100W.
I also have this question for a while, it happens to all my HiveOS rigs, and in comparison, I noticed that NiceHash OS (also on Linux) fully stops power usage when power is stopped, I get ~50W remaining on wall socket. And with HiveOS I get around 234W remaining at socket. Out of 590W while mining.
So it consumes 40% of power while sitting around doing nothing.
That just sounds fishy to me and people don’t seem to know or care why.