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Noctua NF-A12x25 PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)

4.9 out of 5 stars 3,403 ratings
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  • 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
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  • Noctua NF-A12x25 PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)
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  • Noctua NF-A14 PWM, Premium Quiet Fan, 4-Pin (140mm, Brown)
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  • Noctua NF-A12x15 PWM, Premium Quiet Slim Fan, 4-Pin (120x15mm, Brown)
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Noctua NF-S12A PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)
Customer Rating 4.9 out of 5 stars (3403) 4.8 out of 5 stars (8521) 4.9 out of 5 stars (3591) 4.9 out of 5 stars (5447) 4.7 out of 5 stars (1560) 4.8 out of 5 stars (2118)
Price £26.49 £12.94 £21.99 £19.99 £19.99 £19.99
Shipping FREE Delivery . Delivery Details FREE Delivery on your first eligible order to UK or Ireland. Details FREE Delivery . Delivery Details FREE Delivery on your first eligible order to UK or Ireland. Details FREE Delivery on your first eligible order to UK or Ireland. Details FREE Delivery on your first eligible order to UK or Ireland. Details
Sold By NOCTUA - Designed in Austria NOCTUA - Designed in Austria NOCTUA - Designed in Austria NOCTUA - Designed in Austria NOCTUA - Designed in Austria NOCTUA - Designed in Austria
Item Dimensions 12 x 2.5 x 12 cm 12 x 2.5 x 12 cm 14 x 2.5 x 14 cm 12 x 2.5 x 12 cm 12 x 1.5 x 12 cm 12 x 2.5 x 12 cm
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Product Description

NF-A12x25 PWM header

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.

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pwm flx uln 5v 5v
NF-A12x25 PWM NF-A12x25 FLX NF-A12x25 ULN NF-A12x25 5V PWM NF-A12x25 5V
Voltage 12 V 12 V 12 V 5 V 5 V
Connector 4-pin PWM 3-pin 3-pin 4-pin PWM 3-pin
RPM Max: 2000 / Min: 450 2000 1200 Max: 1900 / Min: 450 1900
RPM with L.N.A. 1700 1700 900 - -
RPM with U.L.N.A. - 1350 - - -
Acoustical Noise 22,6 dB(A) 22,6 dB(A) 12,1 dB(A) 21,4 dB(A) 21,4 dB(A)
Acoustical Noise with L.N.A. 18,8 dB(A) 18,8 dB(A) 7,6 dB(A) - -
Acoustical Noise with U.L.N.A. - 14,2 dB(A) - - -
Size 120x120x25 120x120x25 120x120x25 120x120x25 120x120x25
Colour Brown & Beige Brown & Beige Brown & Beige Brown & Beige Brown & Beige
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Customer reviews

4.9 out of 5 stars
4.9 out of 5
3,403 global ratings
5 star
92%
4 star
5%
3 star
1%
2 star 0% (0%) 0%
1 star
1%

Top reviews from United Kingdom

sw
5.0 out of 5 stars Exceptional product: Best of all my 120mm and 140mm computer fans
Reviewed in the United Kingdom on 9 November 2018
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5.0 out of 5 stars Exceptional product: Best of all my 120mm and 140mm computer fans
By sw on 9 November 2018
I have experience of quite a lot of the top rated computer fans. The NF-A12x25 is quantitatively superior to all of the 120mm fans in the same segment and even better than one of the best rated 140mm fans (the segment, one larger than that the NF-A12x25 primarily competes in).

Comparison:
1) EK Varder 120mm. Good static pressure. Quite noisy. Terrible quality control. (1 fan defective out of 7 ordered. Fans do not rotate on axis "level" - easily visible).
2) Noiseblocker eLoop 120mm. Fairly weak static pressure. Fairly quiet. Excellent quality. (Note you should only use these in "push" not "pull" against a radiator, because of the design).
3) Corsair ML140 140mm. Very good static pressure. Fairly quiet. Good quality. Overall a good product.
4) Noctua NF-A12x25. Excellent static pressure (better than the very good ML140). Excellent silence (quietest of all at same each rpm). Excellent quality. 7 fans ordered. None defective. Great build quality and consistency.

The only problem with the NF-A12x25 is the price. I can get 2 ML140 for the price of one of the Noctua fans. I wish Noctua would sell the NF-A12x25 at a cheaper price without the bundled accessories, most / all of which are pretty useless to me and immediately get thrown into a spares box.

Note on my system: Currently I have 4x NF-A12x25 against one 480mm radiator. 4x ML140 against a 560mm radiator and 3x NF-A12x25 used as case intake fans. I am an experienced custom PC modder / builder.

I can't wait for NF-A14 fans to get updated to Sterrox standards. When they get released (maybe 2019) I will retire the ML140.
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23 people found this helpful
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Aphrenedge
5.0 out of 5 stars £27 for a fan? What is this
Reviewed in the United Kingdom on 16 August 2019
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20 people found this helpful
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Mark Kelly
5.0 out of 5 stars Silence is Noctua - and golden!
Reviewed in the United Kingdom on 22 February 2019
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5.0 out of 5 stars Silence is Noctua - and golden!
By Mark Kelly on 22 February 2019
Bought this Noctua 120mm fan after much deliberation. I even consulted with Noctua directly before my purchase.
I'm on my fourth pc build now, and the Cryorig Lumni cpu cooler, although very good, was being let down by the factory installed fan. Simply put, the Cryorig fan had developed a very irritating undulating whine, that was at such a frequency range as to be heard even when wearing headphones - even at speeds varying from 800rpm - 1000rpm. Any faster and it would drone.
Now the Noctua seen in the pictures runs at 1300rpm and is whisper quiet, and for someone who loves a quiet pc when browsing, gaming or working on tee shirt designs, this is sheer heaven. Asides from the aesthetic aspect of colour clash, I'm more than happy to compromise. This review is being written on the same day of delivery and installation (which is the following day from placing my order - thumbs up there) so I have yet to run this on full load during online gaming, or designing and music playing. But a quick check on Core Temp as I write this shows it running at 31 deg C. So very happy.

In conclusion, from my own personal perspective, if you can handle the odd colour scheme buy without hesitation is you want near silent performance combined with effective and efficient cooling. A great purchase and worth the price.
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6 people found this helpful
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Michael Graham
5.0 out of 5 stars Failed after less than 6 months UPDATE: Replacement going strong 2 years later
Reviewed in the United Kingdom on 25 December 2018
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6 people found this helpful
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