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Brown 92mm square case fan with textured blades and rubber corner pads

Noctua

Noctua NF-A9 PWM 92mm case fan 4-pin 2000 RPM brown

SKU CH-4KM3-J6Q6Q MPN NF-A9 PWM

A premium quiet 92mm PWM fan with AAO frame and Flow Acceleration Channels, 400–2000 RPM range, 46.44 CFM airflow, 22.8 dB(A) noise.

  • Fan size92 mm
  • Number of fans1 Fan
  • Fan controlNo Controller
  • Fan depth25 mm
  • Bearing designSSO2 ( Self-stabilising oil-presure bearing )
  • Rotational speed2,000 RPM (standard ), 1,550 RPM (w/ L.N.A ), 400 RPM (Mini

Model PWM

  • Premium quiet cooling with AAO frame and Flow Acceleration Channels
  • 4-pin PWM automatic speed control across 400-2000 RPM range
  • Low-Noise Adaptor reduces maximum speed to 1550 RPM at 16.3 dB(A)
  • SSO2 bearing rated for over 150000 hours MTTF
  • Includes vibration compensators, Y-cable and 30cm extension cable

Premium 92mm PWM fan for compact builds

The NF-A9 PWM is a 92mm case fan designed for CPU coolers, water-cooling radiators and small-form-factor cases where space is limited. Its 4-pin PWM connector enables automatic speed control from 400 to 2000 RPM through standard motherboard headers. The brown colour scheme matches Noctua's signature aesthetic without any LED lighting.

Sustained airflow with acoustic optimisation

Flow Acceleration Channels on the impeller reduce flow separation at the outer blade regions, maintaining efficiency during continuous operation. The Advanced Acoustic Optimisation frame integrates anti-vibration pads, Stepped Inlet Design and Inner Surface Microstructures to lower vortex noise. At full 2000 RPM the fan delivers 46.44 CFM at 22.8 dB(A); with the supplied Low-Noise Adaptor it runs at 1550 RPM for 36.84 CFM at 16.3 dB(A).

SSO2 bearing and versatile mounting kit

The self-stabilising oil-pressure bearing is rated for more than 150000 hours MTTF, supporting long-term reliability under constant load. In the box you receive four vibration-compensating mounts, four fan screws, a 30cm extension cable and a 4-pin Y-cable for running two PWM fans from one header. The 92x92x25mm frame fits standard 92mm mounting patterns without modification.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 67% of the 8,339 comparable items (median $19.99).
Fan size 92 mm
Lower than about 69% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Brand nameNoctua
Model nameNF-A9 PWM
Product typeCase Fan
Product colorBrown
Performance
Rotational speed2,000 RPM (standard ), 1,550 RPM (w/ L.N.A ), 400 RPM (Mini Rotation Speed)
Airflow rate46.44 CFM (standard), 36.84 CFM (w/L.N.A. )
Power
Power input connector4 Pin
Size & build
Fan size92 mm
Number of fans1 Fan
Fan depth25 mm
Bearing designSSO2 ( Self-stabilising oil-presure bearing )
Product dimensions92 × 92 × 25 mm
Shipping weight0.24 kg
Package size211 × 152 × 32 mm
Compatibility
Compatible withCPU Cooler, Water-Cooling Radiator and Case
In the box
In the boxLow-Noise Adaptor (L.N.A.)
4-Pin Y-Cable
30 cm Extension Cable
4 Vibration-Compensators
4 Fan Screws
Environment & compliance
Operating noise22.8 dB(A)/standard, 16.3 dB(A)(w/ L.N.A )
More details
Fan controlNo Controller
LED lightingNo

Questions about this item

How loud is the NF-A9 PWM at its standard 2000 RPM speed?

At 2000 RPM the fan produces 22.8 dB(A). With the supplied Low-Noise Adaptor limiting speed to 1550 RPM, noise drops to 16.3 dB(A).

Does the NF-A9 PWM need a 4-pin PWM header on the motherboard to run?

Yes, the 4-pin PWM connector plugs into a standard 4-pin fan header for automatic speed control between 400 and 2000 RPM.

Will the NF-A9 PWM fit the screw pattern of my older 92mm case or cooler?

The fan uses the standard 92mm mounting holes (92.00 x 92.00 mm) and includes vibration-compensating mounts plus regular screws for backward-compatible installation.

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