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Inner Surface Microstructures

Inner Surface Microstructures are an advanced aerodynamic design measure first introduced with Noctua’s NF-F12 fan. Miniature dents at the inside of the fan frame create a turbulent boundary layer when the fan blades pass by. With the tips of the fan blades ploughing through this boundary layer, flow separation from the suction side of the blades is significantly reduced. As suction side flow separation is a major source of axial fan blade passing noise and leads to considerable losses in airflow and pressure efficiency, the use of Inner Surface Microstructures allows for lower noise emission and better performance at the same time. Reducing undesired turbulences caused by suction side flow separation, Inner Surface Microstructures help Noctua’s latest fans to keep pushing the boundaries in performance to noise efficiency.


Inner Surface Microstructures





Noctua
28.03.2015 - Modders-Inc.com NH-L9x65
Test verdict: "This is one low-profile cooler that has touch-the-sky performance and not just reaches for the bar, but sets a new one entirely." (Ron Perillo, Modders-Inc.com)
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26.03.2015 - PCkoloji.com NH-L9x65
Test verdict: "65 mm yükseklikle sınırlı kalan bu işlemci soğutucusu son derece sessiz ve HTPC sistemler için ideal." (Gorkem Yildirim, PCkoloji.com)
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26.03.2015 - Tweak.dk NH-U9S
Test verdict: "Den er meget støjsvag ved standardfrekvensen, og selv ved et OC på 4,2 Ghz larmer den ikke vildt meget." (Kim Monberg, Tweak.dk)
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25.03.2015 - FunkyKit.com NH-U9S
Test verdict: "If you are in the market for a cooler that will not suck up volume inside your case, look no further because the NH-U9S will blow your mind with the cooling capabilities at this size." (Chris McCart, FunkyKit.com)
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