To record the audible output of the card we use our TES Sound Meter and measure about 12-15 inches from the Raven 02 Chassis, which is closed (just as it would be when people are using it). There is no point us laying a sound meter down next to a graphics card on a test bench, its not indicative of a real world environment and gives false (high) readings.
We measured noise by playing Crysis Warhead at Enthusiast settings.
The cooler is almost inaudible at idle and still remains very quiet under load, it is noticeably improved when compared directly with the reference solution and is actually one of the quietest high end boards we have tested. We were extremely impressed with this result.