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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
27.02.2015 - TechSupportForum.com NH-U9S
Test verdict: "The conclusion leaves me with the same thoughts that I have when I review any Noctua cooler and those are the thoughts of reviewing an excellently crafted product. Noctua coolers are known across the board for outstanding quality and itís shown even further with each unit having a six year warranty. These little coolers are small, compact, and certainly worth the investment for any mATX, ATX or mini-ITX system." (Justin Vendette, TechSupportForum.com)
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27.02.2015 - HWLegend.com NH-U9S
Test verdict: "Il Noctua NH-U9S Ť un dissipatore realizzato con estrema cura in ogni suo dettaglio. La confezione, gli accessori, il cooler stesso e la ventola sono progettati a tavolino per offrire uníesperienza unica nel suo genere. Questo dissipatore nasce per imporsi come modello di riferimento di punta, nella fascia di mercato destinata ai sistemi compatti quali micro ATX e mini ITX." (Antonio Delli Santi, HWLegend.com)
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26.02.2015 - PureOverclock.com NH-U9S
Test verdict: "In terms of performance, at the stock 3.5GHz settings, the coolers held their own ground and performed in the middle of the pack and even kept up with most of the AIO units we tested before. In push pull settings both coolers even kept up with the Corsair H100i by 1 degree. This was rather impressive for such small coolers." (Kenny Ha, PureOverclock.com)
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26.02.2015 - TruePCGaming.com NH-L9a
Test verdict: "The Noctua NH-L9i is undoubtedly the coolest and quietest ITX heatsink Iíve tested. Noctua have performed miracles when you consider the high-airflow and reasonable temperatures given its limiting size." (John Williamson, TruePCGaming.com)
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