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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
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Noctua
17.04.2015 - CoolingTechnique.com NH-L9x65
Test verdict: "Tirare delle conclusioni su questo genere di proposte non è mai semplice, se però si analizzano le premesse con il quale l'NH-L9x65 viene venduto possiamo sicuramente direi che il bersaglio è stato nuovamente centrato da parte di Noctua." (Damiano Villa, CoolingTechnique.com)
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17.04.2015 - OverclockersClub.com NH-U9S
Test verdict: "Noctua is in a great place market wise, because of good performance and quality fans. Any users who either do not have the internal retail space or is looking for lower temperatures versus using the stock cooler. This is what this cooler is intended for. It may be a little pricey for my taste, but you get a lot for what you pay." (Isaiah Rossiter, OverclockersClub.com)
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17.04.2015 - El Chapuzas Informático NH-L9x65
Test verdict: "El Noctua NH-L9x65 es quizás uno de los mejores disipadores ultra-compactos que podemos encontrar en el mercado, pues con su altura de tan solo 65 mm permite ser instalado en chasis realmente muy muy bajos. (Iván Martínez, El Chapuzas Informático)
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16.04.2015 - Razorman.net NH-L9x65
Test verdict: "El rendimiento de este Noctua NH-L9x65 es muy bueno y a la vez muy silencioso. El proceso de instalación es sencillísimo y es ideal para equipos HTPC o mini-itx." (Ana Rey Carballeira, Razorman.net)
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