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Noctua NF-A12x25 ULN, High-Performance Whisper Quiet Fan 120mm

Based on 380 reviews
Condition: New
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$34.95
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Availability: In Stock.
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Arrives Saturday, Oct 31
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At a glance

Condition
New
Model
NF-A12x25 ULN
Weight
360 g
Material
Sterrox LCP
Power Connector Type
3-Pin
Voltage
12 volts
Cooling Method
Air
In the box
1 piece
Warranty
6 year manufacturer’s warranty
Works with
Desktop

Features 5

  • Ultra low noise fan, 120x120x25mm, 12V, 3-pin Molex, 1200/900 RPM, max. 12.1 dB(A), >150,000 h MTTF
  • Next-generation 120x25mm A-series design provides unprecedented quiet cooling performance, ideal for CPU coolers and watercooling radiators
  • 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.)
  • 3-pin ULN version with 1200rpm (900rpm with supplied Ultra-Low-Noise Adaptor) for serious silent enthusiasts who demand the utmost quietness of operation

Description

Noctua's premium cooling components are internationally renowned for their superb quietness, exceptional performance and quality. 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 Channels and 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 3-pin ULN version provides super-slow 1200/900rpm speed settings for ultra-low-noise applications and highly noise-sensitive users who demand near-silent acoustics. 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. 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. 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. 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. 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. 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.

Specs 23

Product Dimensions 4.72"L x 0.98"W x 4.72"H
Brand Noctua
Power Connector Type 3-Pin
Voltage 12 volts
Cooling Method Air
Noise Level 12.1 db
Material Sterrox LCP
Maximum Rotational Speed 1200 rpm

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


High quality and value
Quality components. Easy install. Has many options for motherboard power interfaces. VERY quiet. Well worth the money
Reviewed in the United States on August 14, 2025 by Rene Rosario

Super Quiet - well worth the price
Wanted quieter because old fans were too loud to clearly hear details from ambient music. Excellent design and build quality. Came with extra full rim anti-vibration gasket for water cooling radiators and cable extensions, which I needed. Works as advertised. Purchased two fans. Low noise, barely perceptible compared to original dual noisy fans that were replaced that came with CPU Hydro cooler radiator. So quiet compared to old fans was in disbelief and had to double check the system was actually running. Happy I found these and only wished I had done so sooner! ... show more
Reviewed in the United States on July 7, 2020 by Amazon Customer

Needed to cool a 1500 watt Ham Amp. This did the job without Noise !
In Ham radio, you need quiet in the shack (To hear those faint long distance calls on the radio) But you also need power. These amps create a lot of heat and an external fan was needed. The problem was the fans all created noise, until I found this one. Its large size and output was more then enough to keep the amp area cool, and the fan its-self created no noise that I could hear. I am amazed and will buy these fans for now on. Understand its only been a week, and i will update if something goes wrong. Also note I used only 2 of the 3 wires, taking power directly from my 13.8vdc power supply. Cheers AE0DC ... show more
Reviewed in the United States on February 20, 2021 by Rockbase

Great.
Very quiet, very reliable and things you may need to mount it come in the box. Highly recommended.
Reviewed in the United States on November 2, 2024 by rob

Quiet and powerful
What an excellent fan! The fans that came with my case were loud, so out they went. I put three of these in the front panel and connected them together to share one fan header. Happy ears.
Reviewed in the United States on October 22, 2023 by JD

Would give 4 stars, but I suppose it's my fault for ordering the 3 pin version
This is a quiet fan. I bought it to replace a cpu fan and was disappointed to realize that I had bought he 3 pin version that is just always on at full tilt. It's quiet for how much air it moves, I'll give them that. I just wish I would have bought the 4pin so that my mobo could control the speed. Alas, I was also out of town for a while and occupied when it came in, so I missed the return window, and the thing isn't cheap! ... show more
Reviewed in the United States on April 16, 2021 by Amazon Customer

So quiet!
Maybe Noctua is pricier, but the quiet and airflow were well worth it.
Reviewed in the United States on September 19, 2024 by Greg

Legitimately the most well built computer fan on the market
Dead silent, and my mobo can adjust RPM by voltage so I don't need the PWM version. Noctua doesn't make up any stats, everything they list is 100% true. The only thing is that I don't need another molex adapter; I have too many of those already. I would have appreciated a 3 pin splitter instead.
Reviewed in the United States on May 13, 2022 by bacalao
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