Actually, IMO my components make very little noise. I haven't tested it with a meter or anything but it is acceptable to me and I'm ususally only a foot and a half away from my computer. BTW. I even tested the fans without any other fans or noismaking components on and they were still pretty quiet to my. Definitley not 21 DBA though, maybe 30, but not much higher than that. Maybe dead silent is an exaggeration, but they're pretty close.