It's not necessarily the level of the sound, it's the quality of the sound just as much. And those dB specs can be taken with a grain of salt as they don't list the conditions (distance, ambient noise level, etc.). Look at Tt's dB ratings on some of their fans but only noobs and the other unaware buy Tt fans if they want quiet. While the Yate's are known to be quiet and give enough flow that you can turn 'em down and still have decent flow with even less noise (basically a Nexus at 1/5th of the price). And certainly no one sells a better fan for less than that.
.bh.