Noise Level Results
To obtain the 26 dB rating of the included fan, of course I was in Quiet mode, and the fans were spinning at near 1100 RPM for this result. The claim of being a silent cooling solution is spot on. Even at the expense of a few degrees, even with a mild overclock, the HE01 is more than capable of handling its business with little to no additional noise to your chassis.
Once the switch was set on Performance mode, you definitely are given better performance, to the tune of five degrees of improvement. The issue is, that once the switch is set, and 12V were surging through this fan, it skyrockets the noise levels to a maximum result of 62 dB.
Keep this in mind if you do plan to add more of these fans, it's only going to get louder.