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Noctua NF-A6x25 FLX 60mm Low Noise Fan

  • 60 x 25mm quiet PC cooling fan
  • Noise level from 8.2 dB(A)
  • Feature packed

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QuickFind: 623365

Mfr part code: NF-A6X25

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    Noctua NF-A6x25 FLX 60mm Low Noise Fan Product Description

    Noctua NF-A6x25 FLX 60mm Low Noise Fan

    Noctua's first 60mm fan features Smooth Commutation Drive technology, modular cabling, Low-Noise Adaptors and a massive six years manufacturer's warranty.

    Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua's AAO frame, the NF-A6x25 FLX is a highly optimised, premium quality quiet fan in 60x25mm size. Smooth Commutation Drive technology and Noctua's reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, Low-Noise Adaptors and six years manufacturer's warranty, the NF-A6x25 is a premium choice for the highest demands.


    60 x 25mm quiet PC cooling fan

    Noise level from 8.2 dB(A)

    Feature packed

    Six year manufacturer warranty

    Flow Acceleration Channels

    The NF-A6x25 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. More info.

    Reduced Motor Hub Size

    Thanks to its streamlined, compact motor design, the NF-A6x25's motor hub is smaller than with conventional 6cm fans. This allows for more blade surface area and thus contributes to the NF-A6x25's superior airflow and pressure performance.

    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. More info.

    Stepped Inlet Design

    Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space restricted 
    environments. More info.

    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. More info.

    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 mounting systems and fan clips used on heatsinks.

    Smooth Commutation Drive 2

    The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A6x25 remarkably quiet even at very close distance. More info.

    SSO2 Bearing

    The NF-A6x25 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. More info.

    Three speed settings for full flexibility

    Providing 3000, 2400 and 1600 RPM speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A6x25 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.

    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 the supplied 3:4 pin adaptor allows to connect the fan directly to the power supply.

    Six years manufacturer's warranty

    Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A6x25 features an MTBF of more than 150.000 hours rating and comes with a full six years manufacturer's warranty.


    Size - 60x60x25 mm

    Screw hole spacings - 50 mm

    Connector - 3-pin

    Bearing - SSO2

    Blade Geometry - A-Series with Flow Acceleration Channels

    Frame Technology - AAO (Advanced Acoustic Optimisation)

    Rotational Speed (+/- 10%) - 3000 RPM

    Rotational Speed with L.N.A. (+/- 10%) - 2400 RPM

    Rotational Speed with U.L.N.A. (+/- 10%) - 1600 RPM

    Airflow - 17.2 CFM

    Airflow with L.N.A. - 13.8 CFM

    Airflow with U.L.N.A. - 9.8 CFM

    Acoustical Noise - 19.3 dB(A)

    Acoustical Noise with L.N.A. - 14.5 dB(A)

    Acoustical Noise with U.L.N.A. - 8.2 dB(A)

    Static Pressure - 2.18 mm H2O

    Static Pressure with L.N.A. - 1.41 mm H2O

    Static Pressure with U.L.N.A. - 0.61 mm H2O

    Max. Input Power - 1.44 W

    Max. Input Current - 0.12 A

    Voltage - 12 V

    MTBF  > 150,000 h

    Accessories - Low-Noise Adaptor (L.N.A.), Ultra-Low-Noise Adapter (U.L.N.A.), 3 to 4-Pin Adaptor, 30cm Extension Cable, 3 Vibration-Compensators and 4 Fan Screws

    Technical Specifications

    Manufacturer Warranty

    Service & Support Limited warranty - 6 years
    Service & Support Details Limited warranty - 6 years


    Product Type Case fan
    Package Content Ultra-Low-Noise Adaptor (U.L.N.A.), Low-Noise Adaptor (L.N.A.), 3-pin plug to 4-pin Molex adapter, 4 screws
    Width 6 cm
    Depth 6 cm
    Height 2.5 cm

    Heatsink & Fan

    Fan Diameter 60 mm
    Fan Height 25 mm
    Fan Bearing SSO2 bearing
    Rotation Speed 1600-3000 rpm
    Air Flow 16.7-29.2 cfm
    Noise Level 8.2 - 19.3 dBA
    Power Connector 3-pin plug
    Rated Voltage 12 V
    Rated Current 0.12 A
    Power Consumption 1.44 W
    Cable Length 30 cm


    Mounting Kit Included
    MTBF 150,000 hour(s)

    Noctua NF-A6x25 FLX 60mm Low Noise Fan Ask an owner

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