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. The best way to get maximum load results is by using Furmark, and even though it is not indicative of a real world situation it shows the limits the card can theoretically demand. The ‘gaming’ results are measured when playing Crysis Warhead and is a more valuable result to take from this.
The power consumption figures are very good with this overclocked model only consuming around 100 watts of power when gaming in Crysis Warhead. At idle the N450GTS consumes 1watt less power than the Vapor X HD5770.