The increased power usage in Quiet mode is fairly self explanatory. The constant fall off to lower clocks on the stock 290x results in a lower than average power consumption, while the custom board keeps the GPU at full throttle thanks to a decent cooler.
Also as expected the over all power usage in uber was lower thanks to the proper cooling solutions on the Asus card. AMD already said that people with better cooling would see lower power consumption due to the reduced leakage running at more humane temps.
If anything this card and the NZXT Kraken review do demonstrate just how damn terrible AMD's stock cooling choice was for this release.
Also as expected the over all power usage in uber was lower thanks to the proper cooling solutions on the Asus card. AMD already said that people with better cooling would see lower power consumption due to the reduced leakage running at more humane temps.
If anything this card and the NZXT Kraken review do demonstrate just how damn terrible AMD's stock cooling choice was for this release.