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Flow Acceleration Chanels

Boundary layer separation from the suction side of the fan blades leads to increased vortex noise and lower airflow efficiency. In order to suppress this phenomenon, the Noctua’s A-Series impellers feature suction side Flow Acceleration Channels. These channels alter the flow distribution on the suction side of the blades and speed up the airflow at the crucial outer blade regions. As flow separation is more likely to occur when the speed of the fluid relative to the fan blade is low, the increase in speed achieved through the Flow Acceleration Channels leads to significantly reduced flow separation, which permits lower vortex noise and higher airflow efficiency.



Flow Acceleration Channels





Noctua
24.04.2014 - Hardware Ready NH-D15
Test verdict: "Per prima cosa dobbiamo fare i complimenti a Noctua per il lavoro svolto in questo dissipatore, come potete vedere dai test si evince che il Noctua NH-D15 è superiore a tutti gli altri dissipatori" (Matteo Russo, Hardware Ready)
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24.04.2014 - HardZone.es NH-D15
Test verdict: "Lo han conseguido. Lo que parecía imposible ha sucedido, y Noctua ha logrado mejorar el NH-D14 con este NH-D15. No solo han mejorado su rendimiento térmico, sino que han creado un disipador prácticamente inaudible incluso bajo máxima carga, con una instalación que no puede ser más sencilla, y además han solucionado los problemas de compatibilidad con módulos de memoria RAM de disipadores grandes que achacaba su predecesor. Dicho esto, solo podemos levantarnos y aplaudir: ¡Bravo, Noctua! (Rodrigo Alonso, HardZone.es)
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23.04.2014 - XtremeSystems.org NH-D15
Test verdict: "I was really surprised that the Noctua could keep such a low temperature, but I ran the test three times and reapplied TIM every time looking for what I did wrong, but I couldn't find anything odd. As for the load temperatures, all I can say is I have a huge smile on my face still." (Ambrosidou Nat, XtremeSystems.org)
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23.04.2014 - Crazypc.ro NH-D15
Test verdict: "Noctua își păstrează tradiția și continuă să ofere fanilor Noctua silențiozitate și performanță bună într-un singur pachet. Cu un design foarte reușit care a înlăturat problemele celebrului NH-D14, NH-D15 pe tot parcursul testelor s-a comportat impecabil." (Vlad Buluta, Crazypc.ro)
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