Depends on how you configure the whole thing. You could add another XEON and not spin down the drives and it would consume quite a bit of power, of you can put

Depends on how you configure the whole thing. You could add another XEON and not spin down the drives and it would consume quite a bit of power, of you can put it to sleep and conserve but there is of course a spin-up price to that when you need it. It will definitely consume a few hundred Watts, and when you pack it full of drives it will be more than that. But that's kind of logical. A Synology would not consume that much power but it would also be far slower and have less capacity.