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Nine Blade Design

Many 140x140x25mm axial fans tend to suffer from low static pressure, making them less suitable for use on CPU coolers or watercooling radiators with tight fin spacing. The NF-P14 on the other hand features a highly optimised nine blade impeller design that’s following in the footsteps of Noctua’s successful NF-P12 and has been carefully fine-tuned for both airflow/noise efficiency and outstanding static pressure. As a result, the NF-P14 lends itself not only to use as a case fan but also to high-impedance applications like CPU cooling.

NF-P14 Blade Design


Thanks to the use of Vortex-Control Notches, an advanced design measure first introduced with the NF-P12 fan, the NF-P14 is surprisingly quiet despite of its impressive airflow and pressure performance. The two Vortex-Control Notches at the trailing edge of each blade make the flows along the suction and pressure side mix more smoothly, allowing for less turbulence and velocity loss, which leads to increased efficiency as well as a significant reduction in noise emission.

NF-P14 Blade Design


Vortex-Control Notches not only allow the flows to join less abruptly at the trailing edge, but also serve the purpose of psychoacoustic optimisation by making the fan’s acoustic profile more pleasant to the human ear: Due to the Vortex-Control Notches, trailing edge vortices are split up into several smaller vortices, each having slightly different tonal characteristics. The fan’s airflow noise is thereby spread over a wider range of frequencies and, as a result, perceived as much less annoying.

NF-P14 Blade Design


The Vortex-Control Notches' effect of psychoacoustic optimisation is further enhanced by the staggering of the notches. As the Vortex-Control Notches are staggered from blade to blade, each blade creates a different vortex pattern, which also helps to better spread the fan's noise emission over the frequency spectrum and thereby contributes to the fans unobtrusive acoustic profile that easily blends into the background noise.

NF-P14 Blade Design



More information:
button  120mm & 140mm Mounting
button  NF-P14 Metal Reinforcements




Noctua
22.11.2014 - TechSupportForum.com NF-A4x10 5V
Test verdict: "In the end, the NF-A4x10, NF-A8 and NF-A9 fans comply with Noctua’s Premium Fan statement. Backed by an outstanding six year warranty, these fans should last a computer’s life time without you needing to replace them. With pricing starting at $18.95 for the NF-A8, $19.99 for the NF-A9, and $23.99 for the NF-A4x10, you can’t go wrong buying these fans." (Justin Vendette, TechSupportForum.com)
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21.11.2014 - OCDrift.com NH-D15
Test verdict: "There’s no doubting that the Noctua NH-D15 is a very decent air cooler. Noctua improved the shortcomings of the old flagship cooler NH-D14 by expanding the dual tower design and offer a much better memory compatibility, which allows for more memory kits with high-profile heatspreader to sit under the heatsink. The build quality is excellent with the heatsink’s aluminium fins soldered nicely onto the heatpipes. The SecuFirm2 mounting kit makes cooler installation easier and more secured." (Kevin Owi Kheng Him, OCDrift.com)
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21.11.2014 - 59hardware.net NH-U14S
Test verdict: "Il est tout d’abord apparu que le NH-U14S est un ventirad très bien conçu et qui doit être produit selon des canons très stricts, c’est tout du moins l’impression qu’on a en considérant sa qualité de fabrication générale. Puis, la phase de montage s’est montrée aussi facile que dans le cas des autres ventirads Noctua (et pour cause) et relativement rapide. Quant aux performances en refroidissement, elles sont, comme toujours pour l’instant chez Noctua (après trois tests plus que concluants), elles sont au-dessus de la mêlée et le tout dans un silence plus que relatif, à la hauteur de la réputation que le constructeur s’est patiemment forgée au fil des années." (Laurent Dessinguez, 59hardware.net)
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