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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
19.12.2014 - ElektronikTest.dk NH-U9S
Test verdict: "Køleevne Vi ligger jo ikke på samme niveau som de store modeller, men stadig godt klaret i forhold til størrelsen af køleren. Og med en ekstra blæser på, er der ingen tvivl om at de slår mange, hvis ikke alle andre kølere i denne klasse." (John Thorn, ElektronikTest.dk)
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18.12.2014 - Tom's Hardware NH-L12
Test verdict: "For a Mini-ITX CPU cooler, the Noctua NH-L12 is somewhat of a luxury product. But like any luxury item, this heat sink comes with all the bells and whistles. While the price might be high compared to competing coolers, the NH-L12’s quality, configurability and extras make this cooler a value nonetheless." (Thomas Soderstrom, Tom's Hardware)
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18.12.2014 - hardwarepoint.net NH-U14S
Test verdict: "Der NH-U14S ist noch leistungsfähiger als der ohnehin schon gut abschneidende Dark Rock 3 und hält somit die CPU noch kühler. Hinzu kommt das bessere Montagesystem, was am Ende auch einen teureren Einkaufspreis nach sich zieht." (Dennis Heinze, hardwarepoint.net)
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18.12.2014 - Donanimhaber Forum NH-U9S
Test verdict: "Uzun lafın kısası ufak form faktörde bir bilgisayar topluyorsanız ve size ram,ekran kartı, kasa uyumuyla sıkıntı yaşatmayacak bir hava soğutma çözümü arıyorsanız NH-U9S ye bakmanızı mutlaka tavsiye ederim. Zira şu an piyasada pek alternatifi ortada gözükmüyor. Altı sene garantide cabası." (Ali Emre Alıcı, Donanimhaber Forum)
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