To test power consumption today we are using a Keithley Integra unit and we measure power consumption from the VGA card inputs, not the system wide drain. We measure results while gaming in Crysis Warhead and record the results.
This card has been clearly optimised when compared to other overclocked Editions we have reviewed in the past. At idle, it consumes only 17 watts. This rises to 136 watts when gaming, and 150 watts when loaded in the latest version of Furmark.