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Brown 120mm square case fan with anti-vibration pads and 3-pin connector

Noctua

Noctua NF-S12A ULN 120mm case fan 800/600 RPM

SKU CH-7MB0-SF475 MPN NF-S12A ULN

Ultra-low-noise 120 mm case fan running at 800 RPM or 600 RPM with the supplied adaptor, delivering 74.3 m³/h airflow at just 8.6 dB(A)

  • Number of fans1 Fan
  • Fan controlNo Controller
  • Fan depth25 mm
  • Bearing designSSO2
  • Rotational speed800 RPM +/-10% 600 RPM +/-10% (with L.N.A adapter)
  • Airflow rate74.3 m3/h (standard) 57.5 m3/h (w/L.N.A.)

LED No

Model ULN

  • Ultra-low noise at 6.7 dB(A) with supplied Ultra-Low-Noise Adaptor
  • Dual speed settings of 800 RPM and 600 RPM for silent flexibility
  • Award-winning S12 design with Anti-Stall Knobs and AAO frame
  • Airflow of 74.3 m³/h standard and 57.5 m³/h with adaptor
  • Long-life SSO2 bearing rated beyond 150,000 hours MTTF

Ultra-Low-Noise 120mm Case Fan

The Noctua NF-S12A ULN is a 120 x 120 x 25 mm case fan built for ultra-low-noise operation. It runs at 800 RPM standard and 600 RPM with the supplied Low-Noise Adaptor. The SSO2 bearing and Smooth Commutation Drive 2 deliver smooth running with a rated MTTF of 150000 hours. A 3-pin connector and included 3:4-pin adaptor provide flexible power options.

Silent-Build Enthusiasts

This fan suits builders who prioritise near-silent acoustics over maximum airflow for case intake, exhaust, CPU cooler or radiator use. Anti-Stall Knobs, the AAO frame with Stepped Inlet Design and Inner Surface Microstructures, plus integrated anti-vibration pads minimise turbulence and vibration transmission. Buyers needing higher static pressure or greater airflow volume for dense radiator stacks should look at alternative models.

Two Speed Settings Define the Operating Envelope

At 800 RPM the fan moves 74.3 m3/h at 8.6 dB(A); with the Low-Noise Adaptor it drops to 600 RPM, 57.5 m3/h and 6.7 dB(A). This headroom covers typical case ventilation and moderate radiator loads quietly. It runs out when a build demands substantially higher static pressure or airflow than 74.3 m3/h can supply, such as heavily restricted high-fin-density radiators or high-heat-load enclosures.

How it compares

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Price $23.99
Pricier than about 60% of the 8,339 comparable items (median $19.99).

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Specifications

Product
Brand nameNoctua
Model nameNF-S12A ULN
Product typeCase Fan
Product colorBrown
Performance
Rotational speed800 RPM +/-10%
600 RPM +/-10% (with L.N.A adapter)
Airflow rate74.3 m3/h (standard)
57.5 m3/h (w/L.N.A.)
Power
Power input connector3 Pin
Size & build
Number of fans1 Fan
Fan depth25 mm
Bearing designSSO2
Product dimensions120 × 120 × 25 mm
Shipping weight0.29 kg
Package size213 × 152 × 38 mm
Compatibility
Compatible withCPU Cooler, Water-Cooling Radiator and Case
Environment & compliance
Operating noise8.6 dB(A) standard
6.7 dB(A) (w/ L.N.A)
More details
Fan controlNo Controller
LED lightingNo

Other versions of this model

2 more in the same range

Questions about this item

Does my motherboard need a 3-pin header to run the NF-S12A ULN?

Yes, the fan uses a 3-pin connector; a 4-pin header works too but PWM control is not supported. The box also includes a 3-to-4-pin adaptor for direct PSU power.

Will the 120 x 120 x 25 mm frame fit the same mounting holes as my current 120 mm fans?

Yes, the 120 mm square footprint and 25 mm thickness match the standard 120 mm pattern, and the integrated anti-vibration pads work with regular screws.

How can I confirm the fan is running at the quieter 600 RPM setting after installing the L.N.A. adapter?

With the Ultra-Low-Noise Adapter fitted, the fan should spin at 600 RPM ±10 % and produce about 6.7 dB(A); check the RPM reading in BIOS or monitoring software.

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