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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.


Noctua
17.12.2014 - PC-Max.de NH-U9S
Test verdict: "Auch wenn es sich bei den beiden neuen Kühlern von Noctua um keine Modelle mit brachialer Cooling-Performance handelt, liegen die verzeichneten Temperaturen in einem Bereich, der einige deutlich ausladendere Konkurrenten überflügelt. Zudem muss sich vor Augen geführt werden, in welchen Einsatzgebieten die Verwendung eines derart kompakten CPU-Coolers sinnvoll ist. Die kleinen Würfel machen aufgrund ihrer großen Kompatibilität mit umliegenden Bauteilen des Systems und der besonders im Falle des NH-D9L geringen Bauhöhe vor allem in kompakten Systemen viel her." (William Zwingenberger, PC-Max.de)
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17.12.2014 - Deep in IT NH-D15
Test verdict: "Teploty jsou velice dobré, je nutné si uvědomit, že Core i7-5960X je 140W procesor, který jsme navíc v OC taktovali o 22% výše oproti TurboBoost taktu." (David Ježek, Deep in IT)
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17.12.2014 - PCkoloji.com NH-D9L
Test verdict: "110 mm olan yüksekliği ve 95 x 95 mm en boy değeriyle neredeyse tüm kasalara sığıyor ve 3U tip sunucularda bile kullanılabiliyor." (Gorkem Yildirim, PCkoloji.com)
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16.12.2014 - infoBIT.pl NH-U9S
Test verdict: "Zarówno NH-U9S, jak i NH-D9L na pewno dobrze sprawdzą się w urządzeniach typu HTPC, gdzie niski profil jest wielce pożądany." (Wojtek Braś, infoBIT.pl)
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