Price: $34.95
(as of Oct 17, 2025 16:56:14 UTC – Details)
Product description
The NF-A12x25 is a highly optimised next-generation 120mm fan that integrates Noctua’s latest innovations in aerodynamic engineering in order to achieve an unprecedented level of quiet cooling performance. It takes state-of-the-art technologies such as the AAO (Advanced Acoustic Optimisation) frame or Flow Acceleration Channelsand combines them with a record tight tip clearance of only 0.5mm, which is made possible by using the novel Sterrox liquid-crystal polymer (LCP) compound as well as a metal-reinforced motor hub and axis for ultimate precision. Following the approach of Noctua’s A-series, the NF-A12x25 is a true all-rounder that yields superb results in all types of usage, regardless of whether it’s in low-impedance, airflow-oriented applications such as case cooling, or high-impedance, pressure-demanding scenarios such as on heatsinks and watercooling radiators. The 4-pin PWM version supports fully automatic speed control via PWM fan headers and comes with a Low-Noise Adaptor to reduce the maximum speed from 2000 to 1700rpm. Topped off with exceptional running smoothness, Noctua’s reference-class SSO2 bearing and a rich bundle of accessories, the NF-A12x25 is a premium-quality product through and through. Its superior efficiency, cutting-edge construction and pioneering materials make it an elite choice for the most discerning demands.
Next-generation performance
Noctua’s 120mm fans such as the NF-F12 and NF-S12A are renowned as being among the best on the market and have received more than 400 awards and recommendations from the international press. With its further improved efficiency and novel, state-of-the-art engineering, the NF-A12x25 represents another step up in performance and manufacturing.
Sterrox liquid-crystal polymer compound
The NF-A12x25’s impeller is made from Noctua’s novel Sterrox liquid-crystal polymer (LCP) compound that features extreme tensile strength, an exceptionally low thermal expansion coefficient and damping characteristics that are ideal for reducing resonance and vibration phenomena in advanced fan-blade designs.
Ultra-tight tip clearance
The NF-A12x25 has a record tight tip clearance (distance between the blade tips and the inside of the frame) of only 0.5mm. This highly ambitious design sets a new benchmark for 120mm fans and helps the NF-A12x25 to work more efficiently against back pressure, such as on heatsinks or radiators, by reducing leak flows through the gap between impeller and frame.
Metal-reinforced motor hub
The centrepiece of the NF-A12x25’s motor hub is made entirely from steel and the axle mount is reinforced with an additional brass structure. In combination, both measures ensure ultimate precision and increased stability in the critical hub area.
Scope of delivery
NA-RC14 Low-Noise Adaptor (L.N.A)NA-YC1 4-pin PWM y-cableNA-EC1 30cm extension cable4x NA-AV2 anti-vibration mountsNA-AVG1 anti-vibration gasket for water cooling radiatorsFan screws
Highly optimised P/Q curve for all applications
The NF-A12x25’s sophisticated aerodynamic design allows for a pressure to airflow (P/Q) curve that is extremely strong in the critical mid-section. This means that the NF-A12x25 offers excellent performance in both static pressure demanding and airflow demanding applications.
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Customer Reviews
4.9 out of 5 stars 7,232
4.6 out of 5 stars 637
4.7 out of 5 stars 361
4.8 out of 5 stars 493
4.8 out of 5 stars 215
4.8 out of 5 stars 2,757
Price
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$37.95$37.95
Voltage
12 V 12 V 12 V 5 V 5 V 12 V
Connector
4-pin PWM 3-pin 3-pin 4-pin PWM 3-pin 4-pin PWM
RPM
Max: 2000 / Min: 450 2000 1200 Max: 1900 / Min: 450 1900 Max: 2000 / Min: 450
RPM with L.N.A.
1700 1700 900 – no data
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RPM with U.L.N.A.
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1350 – no data
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Acoustical Noise
22,6 dB(A) 22,6 dB(A) 12,1 dB(A) 21,4 dB(A) 21,4 dB(A) 22,6 dB(A)
Acoustical Noise with L.N.A.
18,8 dB(A) 18,8 dB(A) 7,6 dB(A) – no data
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Acoustical Noise with U.L.N.A.
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14,2 dB(A) – no data
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Size
120x120x25 120x120x25 120x120x25 120x120x25 120x120x25 120x120x25
Colour
Brown & Beige Brown & Beige Brown & Beige Brown & Beige Brown & Beige Black with swappable coloured anti-vibration pads
Premium quiet fan, 120x120x25mm, 12V, 4-pin PWM, max. 2000 RPM, max. 22.6 dB(A), >150,000 h MTTF
Next-gen A-series design combines high airflow and high static pressure performance, ideal both as a case fan and for CPU coolers, watercooling radiators and AIO liquid cooling systems
State-of-the-art engineering (AAO frame, Flow Acceleration Channels, record tight 0.5mm tip clearance) and construction (Sterrox LCP material, metal-reinforced hub, metal bearing shell, etc.)
4-pin PWM version for automatic speed control via 4-pin PWM fan headers, 2000rpm maximum speed (1700rpm with supplied Low-Noise Adaptor)
Includes anti-vibration mounts, radiator gasket, fan screws, extension cable and y-cable for running two PWM fans on the same header
Customers say
Customers find this fan extremely quiet and appreciate its premium 120mm design, noting it performs like a 140mm fan and moves a significant amount of air. They praise its build quality, with one customer describing it as thoughtfully engineered, and report temperature improvements of 8C lower idle temps and 5C idle reductions. While many consider it a worthy investment for PC builders, opinions on value for money are mixed, with some finding it worth the price while others disagree.
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