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Smooth Commutation Drive

Next to aerodynamic noise and bearing related noises, the so called "commutation noise" or "switching noise" can play a major role in the noise emission of axial fans with brushless DC motors. At each transition from one stator coil to another, the rotor receives a sudden torque pulse when the next coil switches on. Each of these torque pulses causes a minute deformation of the whole fan structure. Depending on rpm, torque and the material of the fan, this can result in noticeable noises.

Noctua's Smooth Commutation Drive system provides more continuous switching in order to achieve a smoother transition between the stator coils and thereby significantly contributes to the fan's overall quietness. The second generation of this technology (SCD2) further improves running smoothness and reduces minute noises in close proximity to the motor.


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29.07.2014 - ActualidadHardware.com NH-D15
Test verdict: "En definitiva, el NOCTUA NH-D15 es un gran disipador de gama alta con un rendimiento excelente." (Jose Maria Martinez Perdigones, ActualidadHardware.com)
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27.07.2014 - Vortez.net NF-F12 industrialPPC-2000 PWM
Test verdict: "Noctua has taken their game to a whole new level by introducing a superb product which is packed full of value. After our findings we are pleased to hand out our Elite Award." (Ed Hume, Vortez.net)
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26.07.2014 - BestPCInfo.pl NF-F12 industrialPPC-2000 PWM
Test verdict: "Noctua industrialPPC czy redux? Według mnie wszystko zależy od osobistych preferencji. Z jednej bowiem strony seria redux jest zauważalnie tańsza i w teorii nastawiona na lepszą kulturą pracy. Z drugiej strony “śmigła” z serii industrialPPC oferują ciekawszy design oraz dużo wyższą wydajność. Cóż, niech każdy sam zadecyduje co woli ;) Obie serie zasługują na pewno na miano 100% Quality" (Łukasz Talkowski, BestPCInfo.pl)
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24.07.2014 - PC Update NH-D15
Test verdict: "Pour qui a de la place ou n’aime pas les AiO, le Noctua NH-D15 est la nouvelle référence absolue en refroidissement par air." (Thomas Olivaux, PC Update)
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