I don't think they necessarily turn OFF said machines, but most computers for the past half decade will do lower power modes with a lot of efficiency. Most of

I don't think they necessarily turn OFF said machines, but most computers for the past half decade will do lower power modes with a lot of efficiency. Most of the mini computers I've seen based on laptop skus (similar for servers, just many more cores) will run around 8-12W in idle state, but 10x or more that under load. I would asume many servers will be at least similar, with a higher top end.