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NF-S12 / NF-P12

In the design and development of axial fans, the three aerodynamic key parameters of airflow, pressure and noise play a major role. Usually, the goal is to achieve the amount of airflow and static pressure required by a specific application at the lowest possible noise emission. The design should hence provide the optimal balance of airflow, pressure and noise for a given application.

However, even in the field of PC cooling, each application has different requirements: Whereas CPU coolers with tighter fin-spacing require high static pressure, it's mostly the airflow to noise ratio that counts when it comes to case fans.

Common fans are usually designed to be all-round solutions with compromises in certain areas in order to achieve solid results in all typical applications.

Noctua, on the other hand, is following a two-fold approach with its S12 and P12 fan series in order to achieve optimal results at various applications: While the NF-S12B was optimized so as to provide a class-leading airflow to noise ratio and therefore makes for an excellent case fan, the NF-P12 was designed to produce high airflow and an outstanding amount of static pressure, which makes it perfect for use on CPU coolers and other high-impedance applications. The following illustration shows how this approach differs from common all-round solutions:

NF-S12B Blade Design


While the NF-S12B delivers less static pressure, it provides a better airflow/noise ratio. Therefore, it's perfectly suited for case ventilation as well as all applications which don't demand high static pressure and where maximum quietness is the first priority. The NF-P12 on the other hand provides a better pressure/noise ratio and should therefore be the first choice for all applications which demand high static pressure such as CPU cooling.

NF-S12B Blade Design


NF-S12B Blade Design


NF-S12B Blade Design


NF-S12B Blade Design


NF-S12B Blade Design




Links:
button  NF-P12 Nine Blade Design with Vortex-Control Notches
button  NF-S12B Blade Design with Bevelled Blade Tips
button  Which fan is right for me?




Noctua
26.01.2015 - XtremeHardware.com NH-U9S
Test verdict: "Lo consigliamo a tutti coloro i quali volessero un dissipatore molto compatto, potente e silenzioso, per l'integrazione in sistemi micro-ATX, ed anche mini-ITX (ma attenzione all'altezza)." (Matteo Trinca, XtremeHardware.com)
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26.01.2015 - PCReviews.es NH-D9L
Test verdict: "El Noctua NH-D9L es un magnífico disipador de aire de alto rendimiento con una sonoridad increíblemente baja, un precio muy ajustado y un montón de accesorios incluidos, 10 de 10." (David Diaz Villa, PCReviews.es)
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24.01.2015 - TechStation.it NH-U9S
Test verdict: "I Noctua NH-D9L ed NH-U9S sono sicuramente un grande acquisto per chiunque necessiti un dissipatore performante per sistemi compatti senza rinunciare a buone temperature e ad una estrema silenziosità. Quest'ultima in particolare è un assoluto punto di forza, anche al massimo della sua velocità, infatti, la ventola da 90 millimetri di questi due modelli è praticamente inudibile." (Simone Todon, TechStation.it)
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24.01.2015 - videotesty.pl NH-U9S
Test verdict: "Chłodzenie Noctua NH-U9S znakomicie nadaje się do komputerów biurowych i HTPC. Jest dość ciche i jak na swoje wymiary wydajne." (Paweł Borysewicz, videotesty.pl)
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