Today we are measuring the system wattage at the wall socket via a calibrated meter.
The system power drain was measured in the following states:
CPU Load: Cinebench R11.5 64 bit.
When idle, the system consumes only 82.5 watts. Under Cinebench R11.5 64 bit load, this rises to 317 watts. Not the most efficient of processor designs, but we already knew this.