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The classic NF-B9 92mm fan helped to found Noctua’s reputation as a top-tier manufacturer of premium quality quiet cooling components and still impresses users with its exquisite quietness and superb performance. The new PWM version features Noctua’s novel, custom designed PWM IC for fully automatic control and ultra-low power consumption. Equipped with Noctua’s signature SSO bearing and topped off with a 6 years manufacturer’s warranty, the NF-B9 PWM is a proven premium choice for the highest demands.
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Proven NF-B9 Design
Tens of thousands of quiet cooling enthusiasts swear by Noctua’s classic NF-B9. Its impressive quietness, excellent performance and impeccable, time-tested quality made the B9 a default choice for 92mm quiet cooling.
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Bevelled Blade Tips
Reducing critical rotor stator interaction, the NF-B9’s Bevelled Blade Tips permit to combine a higher blade surface area with quieter operation and thus form a cornerstone of the fan’s outstanding efficiency. 
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Vortex-Control Notches
Noctua’s signature Vortex-Control Notches split up trailing edge vortices and thus spread the fan’s noise emission over a wider range of frequencies. This measure makes the NF-B9 PWM sound more pleasant to the human ear.
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Custom designed PWM IC with SCD
Supporting fully automatic PWM speed control, the NF-B9 PWM uses Noctua’s novel, custom designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at lower speeds.
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Low-Noise Adaptor
The NF-B9 PWM is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1600 to 1300rpm. The L.N.A can be used either to run the fan at a fixed speed of 1300rpm or to cap the maximum speed when using automatic PWM control.
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Extensive Cabling Options
The fan’s short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows to connect a second NF-B9 fan to the same PWM fan header for automatic control.
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SSO-Bearing
Combining the proven concept of hydrodynamic bearing with an additional magnet that supports the self-stabilisation of the rotor axis, Noctua’s time-tested SSO-Bearing technology has become synonymous with supremely quiet operation and exceptional long-term stability.
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6 years manufacturer’s warranty
Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-B9 PWM features an MTBF rating of more than 150.000 hours and comes with a full 6 years manufacturer’s warranty.
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22.05.2013 - CoolingTechnique.com NH-U12S
Test verdict: "Le nuove soluzioni di raffreddamento a marchio Noctua si dimostrano più come un passo avanti nella tecnologia dell'air cooling piuttosto che come la solita minestrina riscaldata a cui ormai ci stanno abituando da qualche tempo a questa parte." (Damiano Villa, CoolingTechnique.com)
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22.05.2013 - ElektronikTest.dk NH-C14
Test verdict: "Super godt produkt, den køler godt og ser bare godt ud efter min mening." (John Thorn, ElektronikTest.dk)
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22.05.2013 - HwT.dk NH-U12S
Test verdict: "En rigtig lækker køler fra Noctua, kvalitet hele vejen igennem. Køleren leverer en fremragende ydelse samtidigt med at holde lydniveauet helt i bund. Køleren kommer desuden med et pænt bundle og Noctua leverer gratis monteringskit til Intels socket 775 og 1366 da dette ikke er med i pakken. Leder du efter en suveræn køler af høj kvalitet samtidigt med at din PC ikke larmer som en rumraket, så er Noctuas NH-U12S et udmærket valg." (Lynge Poulsgaard, HwT.dk)
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21.05.2013 - Donanimhaber Forum NT-H1
Test verdict: "Testin en başarılı iki termal macunu Noctua
NH-T1 ve GELID's GC-Extreme Gelid'in ürünü
Türkiye'de bulunmuyor fakat NH-T1 temin edebilirsiniz fazla
ugraşa girmeden." (Ali Emre Alıcı, Donanimhaber
Forum)
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