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 reference design GTX460 is not a power hungry card and the MSI overclocked card only consumes around 8-10 watts more when under load. These are very good power consumption results considering the excellent gaming performance. Please be aware that Furmark is only included out of potential interest, this card never exceeded 130watts when gaming.