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Noctua NE-FD1 PWM IC

Noctua’s custom-designed NE-FD1 is a next-generation PWM fan driver IC that integrates Smooth Commutation Drive (SCD) technology for quieter operation and allows for ultra-low power consumption. Its superb linearity and security features such as locked rotor or reverse voltage protection make it an ideal driver IC for premium-class PWM fans.

PWM Output Signals Compared

Most conventional PWM fan driver ICs put out square signals that cause sudden torque impulses. These impulses can cause minute deformations of the entire fan structure which lead to audible “clicking” noises that are especially noticeable with many common PWM fans running at slower speeds. Adopting Noctua’s Smooth Commutation Drive (SCD) technology, the custom designed NE-FD1 PWM IC slows down the slew rate of the output signal in order to give a smoother, less sudden torque impulse. This way, PWM switching noises can be effectively suppressed and the fan runs even quieter, especially at low speeds.

Noctua’s NE-FD1 IC was not only fine-tuned for superior quietness, it has also been carefully optimised to allow for ultra-low power consumption. For example, the NE-FD1 based PWM version of the award-winning NF-R8, NF-B9 and NF-P12 fans consume 25-40% less power than their non-PWM counterparts. The NF-F12 120mm fan featuring the NE-FD1 IC draws only 0.6W, which is more than 50% less than many fans in the same speed range. This doesn’t only make it eco-friendly but also cuts down the electricity bill: Compared to a typical 2W fan, this allows you to save about half the price of the NF-F12 after 5 years of continuous use.

30.03.2015 - PC Games Hardware 05/15 NF-F12 PWM
Test verdict: "[A]uch in diesem Test gelingt es Noctua als einzige Marke, einen Lüfter komplett ohne hörbare Nebengeräusche zu bauen, sodass die Geräuschkulisse ausschließlich von der bewegten Luftmenge bestimmt wird." (Torsten Vogel, PC Games Hardware 05/15)

30.03.2015 - NH-L9x65
Test verdict: "Personalmente confieso que Noctua es mi marca de disipadores favorita, tanto por su calidad desde el embalaje hasta el más mínimo detalle, como por el rendimiento Premium que tienen sus productos (no en vano es una marca que se dedica exclusivamente a esto. Si no son buenos no les iría bien). Por ello siempre soy bastante más exigente con cualquier producto de la marca que analizo, y análisis tras análisis me demuestran que no me equivoco en mi elección. Prueba de ello es este NH-L9x65, con un excelente rendimiento, pequeño tamaño, bajo nivel sonoro e instalación a prueba de novatos." (Rodrigo Alonso,

30.03.2015 - NH-L9x65
Test verdict: "Este es sin duda uno de los mejores productos en rendimiento que podemos encontrar en el mercado para refrigerar de forma silenciosa la CPU de un sistema compacto, incluso a un precio conjunto bastante ajustado, sin olvidarnos de la excelente garantía de búho de 6 años." (Juan José,

30.03.2015 - [blank]'s Universe NH-D9L
Test verdict: The NH-D9L is a tad bit shorter than the NH-U9S so it is more fitting for a itx build. Like with all Noctua coolers, we highly recommend you check them out." (Martin Tam, [blank]'s Universe)