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Stepped Inlet Design

Noctua’s Stepped Inlet Design is an advanced aerodynamic design measure first introduced with the NF-F12 fan. By adding turbulence to the fan’s influx, the Stepped Inlet Design facilitates the transition from laminar to turbulent flow. This measure has an effect similar to the dimple structure of a golf ball in so far as it leads to better flow attachment to the frame, which allows the impeller to suck in more air and hence improves overall airflow efficiency.


Stepped Inlet Design


In addition to these aerodynamic benefits, the Stepped Inlet Design also reduces tonal intake noises caused by laminar inflow due to it being transformed to turbulent flow, which produces a more broadband noise profile. This way, the Stepped Inlet Design helps to refine the fan’s acoustic qualities by letting it blend into the background noise more easily and making it more agreeable to the human ear.


Noctua
29.05.2015 - TecnoGaming.com NH-D9L
Test verdict: "Noctua es sinónimo de calidad y rendimiento y queda demostrado en nuestro banco de pruebas. En esta ocasión el modelo NH-D9L apunta específicamente a un segmento donde se necesita que un cooler se acople en espacios pequeños como pueden ser un HTPC compacto. Dado que la altura del cooler no supera los 110 mm (con ventilador incluido) resulta ideal para este tipo de configuraciones. Además brinda un excelente rendimiento manteniendo temperaturas óptimas y a su vez gracias a su ventilador PWM obtenemos silencio en la mayoría del uso de la PC." (Alejandro Dau, TecnoGaming.com)
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29.05.2015 - Dark Tech Reviews NH-U9S
Test verdict: "اذا كنت تبحث عن تبريد جيد للمعالج الخاص بك وبحجم صغير جداً فهذه المشتتات موجهة لك " (Ahmed Mohamed, Dark Tech Reviews)
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29.05.2015 - PC Media 05/2015 NH-L9x65
Test verdict: "Dibanding dengan stock cooler, kami merekomendasikan NH-L9x65 untuk beberapa penilaian. Bagi user mini-ITX yang ingin membangun sistem HTPC, dan tak ingin mengalami masalah kebisingan, kami menyarankan NH-L9x65 ini. Kompatibilitas nya terhadap komponen lain cukup mendukung layout motherboard mini-ITX." (Agus Prasetyo, PC Media 05/2015)
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29.05.2015 - QWERTYmag.it NH-D15S
Test verdict: "In base a quello che abbiamo potuto vedere attribuiamo al Noctua NH-D15S il Gold Award per l’estrema silenziosità e per l’altissima flessibilità del prodotto che è in grado di affiancarsi a configurazioni piuttosto compatte, senza rinunciare però ad altissime prestazioni." (Davide Torno, QWERTYmag.it)
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