I recently moved into my new house, which also means that I have to pay for electricity directly. Wanting to do know how much power things are really using in the computer room, I went out and bought a wattmeter. It measure power use at the wall. I thought that other people might be interested in seeing some "real world" measured values.
I measured energy use at the wall with the device idle and also when turned off but plugged in.
It appears that the art of implementing an on/off switch that actually turns the device off is dying out. I'm now turning peripherals and other junk off at the wall using a powerboard with a real switch. And also trying to turn the Shuttle off when GF doesn't need it.