Noise Level Results
Remember when we looked over the specs, there was an inclination that the fans may be a bit loud; well here is what we heard during the stock runs. The 140mm fans are more silent at 33 dB as they spun at 1262 RPM at this setting. The JetFlo 120s are a touch louder with the RPMs running at 1584, delivering 35 dB of noise level.
With twelve volts now surging through the fans, the sound levels jump way up to very audible, almost to a too loud for comfort levels. The JetFlo 120s will spin at almost 2300 RPM while delivering an easily audible 71 dB of noise, even more than the Tundra coolers. Coming in at just less than the stock cooler, the 63 dB of noise produced from the JetFlo 140s at 2000 RPM, shows that neither solution is silent when you want the most out of the Nepton 280L.