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Noctua NF-A12x25 ULN 120mm Case Fan 1200 RPM 12.1 dB(A) Ultra-Low-Noise 3-Pin Sterrox LCP SSO2 Beige Brown

Brand:
Noctua
Noctua NF-A12x25 ULN - Case fan - 120 mm | NF-A12X25 ULN
Noctua NF-A12x25 ULN 120mm Case Fan 1200 RPM 12.1 dB(A) Ultra-Low-Noise 3-Pin Sterrox LCP SSO2 Beige Brown
€52.5 inc. VAT
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NF-A12X25 ULN
€44.12
€52.50 inc. VAT
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Product Code
04:291068
EAN Code
9010018100372
Manufacturer
Noctua
Quick Specs
Size
120 x 120 x 25 mm
Max Speed
1200 RPM (900 with LNA)
Airflow / Noise
32.8 CFM · 12.1 dB(A)
Connector
3-pin (voltage control)
Delivery

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Noctua · Ultra-Low-Noise Fan

Noctua NF-A12x25 ULN Ultra-Low-Noise 120mm

120 mm · 1200 RPM12.1 dB(A)32.8 CFM3-pin · 6-year warranty

The Noctua NF-A12x25 ULN (part number NF-A12X25 ULN) is an ultra-low-noise 120 mm fan that runs at 1200 RPM and only 12.1 dB(A), aimed at silent PCs, home-theatre systems and recording studios where acoustics come first. It uses the same Sterrox LCP impeller and SSO2 bearing as Noctua’s flagship NF-A12x25, tuned for whisper-quiet operation.

Typically in stock with fast delivery across Cyprus.

Compatibility note: This is a 3-pin fan (no PWM). Speed control needs a fan header in DC/voltage mode — on a PWM-only header it runs at full 1200 RPM. The included 3-to-4-pin adaptor also allows connection to a PSU Molex-type lead at fixed speed. Its low airflow (32.8 CFM) suits silent systems, not high-heat gaming rigs.
Best For
✓ Silent and fanless-style PCs
✓ Home-theatre PCs
✓ Recording studios
✓ Low-power office systems
✓ Bedroom PCs
✓ Quiet NAS or file servers

Key Features

 
Ultra-Low-Noise Tuning
Maximum 1200 RPM at 12.1 dB(A), dropping to 900 RPM and 7.6 dB(A) with the included Low-Noise Adaptor — near-inaudible in most rooms.
 
Sterrox LCP Impeller
Liquid-crystal polymer impeller with only 0.5 mm tip clearance keeps efficiency high even at low speeds.
 
AAO Frame + Flow Acceleration Channels
Anti-vibration pads and Flow Acceleration Channels reduce noise and vibration transmitted to the case.
 
SSO2 Bearing + 6-Year Warranty
Self-stabilising oil-pressure bearing rated over 150,000 hours MTTF for long, quiet service.

Technical Specifications

Identification
Brand Noctua
Model NF-A12x25 ULN
Part Number NF-A12X25 ULN
EAN / GTIN 9010018100372
MPN NF-A12X25 ULN
Fan Specifications
Fan Size 120 x 120 x 25 mm (105 mm hole spacing)
Max Speed 1200 RPM; 900 RPM with Low-Noise Adaptor
Airflow 55.7 m³/h (32.78 CFM); 39.4 m³/h (23.19 CFM) with LNA
Static Pressure 0.82 mmH2O; 0.41 mmH2O with LNA
Noise Level 12.1 dB(A); 7.6 dB(A) with LNA
Impeller Sterrox LCP (liquid-crystal polymer), 0.5 mm tip clearance
Frame AAO frame with Flow Acceleration Channels
Motor & Electrical
Bearing SSO2 — self-stabilising oil-pressure bearing
MTTF > 150,000 hours
Connector 3-pin — speed set by voltage (DC mode)
Rated Voltage 12 V (start-up 8 V, max. 13.2 V)
Max. Power / Current 0.6 W / 0.05 A
Ingress Protection IP50
Physical & Package
Colour Beige frame, brown impeller
Weight 195 g
Cable 200 mm (500 mm with extension)
In the Box NA-RC12 Low-Noise Adaptor, NA-AC1 3-to-4-pin adaptor cable, NA-EC2 30 cm extension, 4x NA-AV2 anti-vibration mounts, NA-AVG1 radiator gasket, fan screws
Warranty 6 years

Frequently Asked Questions

Is the Noctua NF-A12x25 ULN quiet enough for a silent PC?
Yes. It produces only 12.1 dB(A) at its maximum 1200 RPM and 7.6 dB(A) with the included Low-Noise Adaptor.
Does the NF-A12x25 ULN support PWM control?
No. It is a 3-pin fan controlled by voltage. Set your motherboard header to DC mode; for PWM control choose the NF-A12x25 PWM.
What is the difference between the NF-A12x25 ULN and the NF-A12x25 PWM?
The ULN version tops out at 1200 RPM and 32.8 CFM for maximum silence, while the NF-A12x25 PWM reaches 2000 RPM, 60.1 CFM and 2.34 mmH2O with PWM control.
Is the NF-A12x25 ULN suitable for a gaming PC?
Only for low-heat builds. Its 32.8 CFM is designed for silence; for gaming or radiators the NF-A12x25 PWM gives much more airflow and pressure.
Singular Expert Insight
The ULN version is for builders who value silence above all — HTPCs, studio machines and low-power systems. If your system runs hot or uses a radiator, the standard NF-A12x25 PWM offers far more headroom with PWM control. See all case fans.

Buyer's Guide

Buy it if
You want a near-silent 120 mm fan (12.1 dB(A)) for an HTPC, studio or low-power PC.
Skip it if
You need PWM control or high airflow for a gaming PC or radiator.
Also consider
Noctua NF-A12x25 PWM for more airflow, or NF-A12x25 PWM chromax.black.swap in black.

Features - Noctua - NF-A12X25 ULN

Colour
brown
More Details
Product Code
04:291068
EAN Code
9010018100372
Manufacturer
Noctua
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