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:
Idle: when resting at the desktop.
Gaming Load: 3Dmark 11 ‘combined test’.
Overall system draw at default clock speeds/voltage settings is very impressive, only demanding 75 watts at idle. This rises to 265 watts when under 3dMark11 combined load. When overclocked the wattage draw increases to 121 watts when idle and 303 watts under load.