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Brown 92mm square case fan with beige blades and black frame, four corner mounting holes, 4-pin PWM connector visible

Noctua

Noctua NF-B9 PWM 92mm case fan 1600 RPM

SKU CH-QQ8F-H55B6 MPN NF-B9 PWM

A 92 mm PWM case fan delivering up to 64.3 m³/h at 1600 RPM with a low 17.6 dBA noise level

  • Fan size92 mm
  • Number of fans1 Fan
  • Fan controlNo Controller
  • Fan depth25 mm
  • Bearing designSSO-Bearing (Self-stabilising oil-presure bearing)
  • Rotational speed1,600 RPM +/-10%, 1,300 RPM +/-10% (w/ L.N.A), 300 RPM +/-10
  • Quiet operation at 17.6 dBA standard noise
  • Reduced noise to 13.1 dBA with included Low-Noise Adapter
  • High airflow of 64.3 m³/h at full speed
  • SSO bearing design for long-term reliability
  • PWM control from 300 to 1600 RPM for flexible speed management

92mm PWM case fan for quiet builds

The Noctua NF-B9 PWM is a 92mm case fan designed for systems where low noise and reliable cooling matter. Its 25mm thickness fits standard mounting points in compact chassis and on compatible CPU coolers. The 4-pin PWM connector enables automatic speed control from supported motherboards.

SSO bearing and vibration damping for stable

The fan uses a self-stabilising oil-pressure bearing rated for long service life. Bevelled blade tips and vortex-control notches reduce turbulence across the speed range. Four silicone vibration compensators and standard screws isolate the motor from the case panel, while the bundled 4-pin Y-cable and 30cm extension simplify cable routing.

17.6 dBA at full speed with lower-speed option

At 1600 RPM the fan moves 64.3 m³/h at 17.6 dBA. The included low-noise adapter drops speed to 1300 RPM for 52.6 m³/h at 13.1 dBA. PWM control can reduce rotation to 300 RPM for near-silent idle operation. Power draw remains minimal thanks to the custom PWM IC with smooth commutation drive.

How it compares

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

Price $22.99
Pricier than about 58% 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-B9 PWM
Product typeCase Fan
Product colorBrown
Performance
Rotational speed1,600 RPM +/-10%, 1,300 RPM +/-10% (w/ L.N.A), 300 RPM +/-10% (Min. Rotational Speed (PWM))
Airflow rate64.3 m3/h (standard), 52.6 m3/h (w/L.N.A.)
Size & build
Fan size92 mm
Number of fans1 Fan
Fan depth25 mm
Bearing designSSO-Bearing (Self-stabilising oil-presure bearing)
Product dimensions92 × 92 × 25 mm
Shipping weight0.23 kg
Package size180 × 147 × 36 mm
Compatibility
Compatible withCase
In the box
In the boxLow-Noise-Adapter (L.N.A)
4-Pin Y-Cable
30 cm Extension Cable
4 Vibration Compensators,
4 Fan Screws
Environment & compliance
Operating noise17.6 dBA, 13.1 dBA (w/L.N.A.)
More details
Fan controlNo Controller

Questions about this item

What does the 4-pin PWM interface allow the NF-B9 PWM to do?

The custom NE-FD1 PWM IC enables fully automatic speed control from 300 RPM up to 1600 RPM with Smooth Commutation Drive for quieter switching.

What mounting hardware and clearances does the 92 mm frame need?

It fits standard 92 mm holes, is 25 mm thick, and includes four vibration compensators plus four fan screws for either screw or rubber mounting.

How is the fan installed and which step is often missed?

Plug the 4-pin connector into a PWM header, use the supplied Y-cable or 30 cm extension if needed, and attach the Low-Noise-Adapter for 1300 RPM operation.

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