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Noctua SSO-Bearing
Thanks to an optimised principle of operation, the self-stabilising oil-pressure bearing (SSO bearing) surpasses current types of ball, sleeve or liquid bearings in terms of long-term stability and quietness.

    Noctua - Bild
    The rotary motion of the axis generates pressure upon the special oil enclosed within the bearing. This causes the build-up of a dynamic pressure field that centres and stabilises the axis within the bearing shell. While conventional liquid bearings employ the principle of hydrodynamic pressure too, the SSO bearing is equipped with an additional magnet that supports the self-stabilisation of the rotor axis. This allows for a faster, more precise and more reliable centring of the rotor axis and thus increases the long-term stability and quietness of the bearing: When the fan starts, the dynamic pressure field of the liquid bearing needs to build up first, which results in an initial precession of the axis, the so called gyro effect. This amounts to an increased abrasion until the axis is stabilised through the build-up of the dynamic pressure field, which may by and by lead to increased noise emission and bearing defects. Because of this, the SSO bearing possesses a built in magnet, whose field ensures the immediate self-stabilisation of the rotor and hence reduces the gyro effect. In addition to the stabilisation during the start-up phase of the fan, the supporting magnet allows for a more exact centring of the axis within the bearing shell and thus further reduces bearing resistance, abrasion and noise emission.

    Noctua - Bild





    Noctua - Bild
    The sleeve and ball bearings currently predominating the fan market exhibit major drawbacks: While conventional sleeve bearings initially have very low noise emissions, they mostly possess unsatisfying long-term stability, which leads to a short overall lifespan and increasing noise after longer operating times. High grade ball bearings, on the other hand, while providing satisfying long-term stability operate at slightly higher noise levels from the beginning. The SSO bearing not only surpasses the quietness of conventional sleeve bearings but also the long-term stability of current top-of-the-line ball bearings.

    Noctua - Bild




Noctua
31.03.2015 - PC Games Hardware 05/15 NH-D15
Test verdict: "Der NH-D15 sorgt für die niedrigsten Kerntemperaturen und ist für Silent-Fans und Übtertakter gleichermaßen interessant." (Torsten Vogel, PC Games Hardware 05/15)
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30.03.2015 - PC Games Hardware 05/15 NF-F12 PWM
Test verdict: "[A]uch in diesem Test gelingt es Noctua als einzige Marke, einen Lüfter komplett ohne hörbare Nebengeräusche zu bauen, sodass die Geräuschkulisse ausschließlich von der bewegten Luftmenge bestimmt wird." (Torsten Vogel, PC Games Hardware 05/15)
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30.03.2015 - HardZone.es NH-L9x65
Test verdict: "Personalmente confieso que Noctua es mi marca de disipadores favorita, tanto por su calidad desde el embalaje hasta el más mínimo detalle, como por el rendimiento Premium que tienen sus productos (no en vano es una marca que se dedica exclusivamente a esto. Si no son buenos no les iría bien). Por ello siempre soy bastante más exigente con cualquier producto de la marca que analizo, y análisis tras análisis me demuestran que no me equivoco en mi elección. Prueba de ello es este NH-L9x65, con un excelente rendimiento, pequeño tamaño, bajo nivel sonoro e instalación a prueba de novatos." (Rodrigo Alonso, HardZone.es)
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30.03.2015 - islaBit.com NH-L9x65
Test verdict: "Este es sin duda uno de los mejores productos en rendimiento que podemos encontrar en el mercado para refrigerar de forma silenciosa la CPU de un sistema compacto, incluso a un precio conjunto bastante ajustado, sin olvidarnos de la excelente garantía de búho de 6 años." (Juan José, islaBit.com)
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