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  3. Fans & PC Cooling
  4. Case Fans
  5. Noctua

  6. Item#: 9SIAADY4B02574

  • $18.95
  • Free 30-day Returns
  • Limit 99999 per customer.
    4.8 (4,757 seller ratings)

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    Noctua Cooling Solutions
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    Noctua NF-A9 FLX, Premium Quiet Fan, 3-Pin (92mm, Brown)

    (70)(1) Write a Review
    • PWM
    • FLX
    • 5V PWM
    • chromax
    • Premium quiet fan, 92x92x25 mm, 12V, 3-pin Molex, 1600/1250/1050 RPM, max. 17.1 dB(A), >150,000 h MTTF
    • Award-winning 92x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
    • Ideal for 9cm CPU coolers (e.g. Noctua NH-U9(S) & NH-D9L series), compact PC cases (HTPC, ITX, Small Form Factor), replacement fan for NAS and other devices, etc.
    • 3-pin FLX version provides 1600/1250/1050rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
    • Includes anti-vibration mounts, fan screws, Low-Noise & Ultra-Low-Noise Adaptors, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply
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    Overview
    Specs
    Reviews (70)

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    The NF-A9 is a highly optimised, premium quality quiet 92mm fan. Featuring Noctua's AAO (Advanced Acoustic Optimisation) frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A9 further improves the renowned quiet cooling performance of the award-winning NF-B9. The FLX version provides 1600/1250/1050rpm speed settings via the supplied Low-Noise Adaptors in order to provide full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. Its superb running smoothness, reference-class SSO2 bearing and Noctua's trusted premium quality make it an elite choice for the highest demands.


     

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    AAO frame

    Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.

     

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    Flow Acceleration Channels
    The NF-A9 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.  
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    SSO2 bearing
    The NF-A9 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.  
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    Integrated anti-vibration pads
    Integrated anti-vibration pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.  
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    Scope of delivery
    • NA-RC12 Low-Noise Adaptor (L.N.A)
    • NA-RC13 Ultra-Low-Noise Adaptor (U.L.N.A)
    • NA-AC1 3:4-pin adaptor cable
    • NA-EC2 30cm extension cable
    • 4x NA-AV1 anti-vibration mounts
    • Fan screws
    Inner Surface Microstructures

    With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.

     

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    Products
    image for this item NF-A9 PWM
    image for this item NF-A9 FLX
    image for this item NF-A9 5V PWM
    image for this item NF-A9 5V
    image for this item NF-A9 PWM chromax.black.swap
    Connector 4-pin PWM 3-pin 4-pin PWM 3-pin 4-pin PWM
    Voltage 12V 12V 5V 5V 12V
    RPM Max: 2000 / Min: 400 1600 Max: 2000 / Min: 400 2000 Max: 2000 / Min: 400
    RPM with L.N.A. 1550 1250 - - -
    RPM with U.L.N.A. - 1050 - - -
    Acoustical Noise 22,8 dB(A) 17,1 dB(A) 22,8 dB(A) 22,8 dB(A) 22,8 dB(A)
    Acoustical Noise with L.N.A. 16,3 dB(A) 11,6 dB(A) - - -
    Acoustical Noise with U.L.N.A. - 8,4 dB(A) - - -
    Size 92x92x25 mm 92x92x25 mm 92x92x25 mm 92x92x25 mm 92x92x25 mm
    Colour Brown & Beige Brown & Beige Brown & Beige Brown & Beige Black with swappable coloured anti-vibration pads
    The NF-A9 is a highly optimised, premium quality quiet 92mm fan. Featuring Noctuas AAO (Advanced Acoustic Optimisation) frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A9 further improves the renowned quiet cooling performance of the award-winning NF-B9. The FLX version provides 1600/1250/1050rpm speed settings via the supplied Low-Noise Adaptors in order to provide full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. Its superb running smoothness, reference-class SSO2 bearing and Noctuas trusted premium quality make it an elite choice for the highest demands.

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

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    The Noctua NF-A9 FLX is a 92mm, 3-pin quiet case fan with three speed settings—1600, 1250, or 1050 RPM—making it suitable for users who want to balance airflow and low noise in compact PC cases, HTPCs, or small-form-factor builds.

    Recommended For

    • PC builders replacing a 92 × 25 mm case or cooler fan who want to reduce fan noise and can choose among three fixed speeds using the included adapters.
    • Small-form-factor, HTPC, and compact-case builders whose hardware specifically takes a standard 92 mm fan and who prefer quieter cooling over automatic motherboard-controlled speed changes.
    • Noise-sensitive desktop users who want a quiet replacement fan for a compatible 92 mm mount and are comfortable setting its speed with the included low-noise adapters rather than a PWM signal.
    • Owners of compatible NAS or other devices who need a 92 mm, 3-pin replacement fan and have verified the device accepts this fan’s speed and monitoring behavior.

    Real-World Use Scenarios

    • In a compact PC or HTPC with a 92 mm fan mount, use the NF-A9 FLX as a case fan when you want airflow without a prominent fan sound; a review found it nearly inaudible inside a chassis with the included low-noise adapters.
    • When replacing the fan on a compatible 92 mm CPU cooler, the NF-A9 FLX provides a quieter cooling option; use a lower-speed adapter to reduce fan noise, with less airflow than at full speed.
    • For a noise-sensitive desktop or home server, choose among the included speed adapters to balance fan noise and airflow; the lowest-speed setting is better suited to systems that do not need the fan’s maximum airflow.
    • As a replacement fan in a NAS, it can be a quieter option if the enclosure takes a 92 mm fan and its connector and fan monitoring are compatible; community reports show that some NAS models may still raise fan errors or stop-fan warnings.