Noctua NF-S12A FLX, Premium Quiet Fan, 3-Pin (120mm, Brown)

(1512 Reviews)

Price
$13.17

Quantity
(10000 available )

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231 Ratings
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Reviews
  • Public

    14-06-2025

    This moves a tremendous amount of air quietly. it was a huge upgrade over the 120mm fan that already came with my case.

  • Anthony Blando

    > 3 day

    very quiet and does a good job cooling my case

  • Andrew Johnson

    > 3 day

    Unfortunately, having just put 3 of these in my chassis, I am finding they are louder than my old fans which were much less expensive, and all while moving notably less air. Adding the low-noise wire adapter gets them to about the same noise level as my old fans while adding a very high pitched faint electrical whine. I can barely feel them pulling air across my water cooler using those adapters and see cpu temps averaging 9c higher on my cpu. One of them also randomly rattles with a sound like a bad bearing, even though theyve been running for just over an hour now. I am hoping it clears up but as I type this review I can hear it spending more and more time rattling.

  • CRAIG W GUNDERSEN

    > 3 day

    Great Product, Price And Service.

  • Robert D

    Greater than one week

    Absolutely phenomenal quality. I was going to go for the newer (better looking) models but I thought that maybe when they were 100% focused on build quality and actual performance instead of pretty colors and all that jazz was most likely when they were producing their best work. Ive purchased 6 of these in total for a new build. Sound on these things is outstanding. Ill be running them at 100% power because at 100% theyre still noticeably quieter than my other case fans at 50% power. These are just the best fans that money can buy. Theres no other way to say it.

  • Prof. Daren Wiegand II

    > 3 day

    very quiet and works really well

  • N8 - Honest Reviewer

    > 3 day

    UPDATE:

  • Rokji

    > 3 day

    I installed two 120mm fans for exhaust on the top of my new custom pc. It works well and silent compare to other fans. Great fans.

  • Asaph

    > 3 day

    I have bought quality fans before, but nothing on the level of a couple Noctuas I bought recently. Wow! Ill likely only buy Noctua from here on out. This ones perfect for my case.

  • Lynn Andrews

    > 3 day

    I cant say enough great things about these Noctua fans. They are simply very high quality. They run surprisingly quiet and smooth, they are obviously designed with care and attention to detail, and the build quality is very high. I love the built-in rubber corners for reduced vibration. The package comes with multiple cable for the different speed selections. I went around my computer room and am looking at all the noisy fans I can replace with these superior Noctua fans. Fan noise is something people get used to and you dont know how noisy bad fans are until you shut the device off. Im very happy to pay the (slight) premium in price to get such high quality. I just wished everything I bought was of this caliber of craftsmanship.

NF-S12A FLX headerNF-S12A FLX header

The NF-S12A marks the third generation of Noctua’s signature S12 series quiet case fans, which have received more than 250 awards and recommendations from the international press. Featuring a further refined blade design with Anti-Stall Knobs that works in tandem with the new AAO (Advanced Acoustic Optimisation) frame, the NF-S12A improves the airflow/noise efficiency of its renowned predecessor by up to 8%. The FLX version provides 1200/900/700rpm speed settings via the supplied Low-Noise Adaptors in order to give you full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. Its superb running smoothness, SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for quiet case cooling

NF-S12ANF-S12A

AAO frame

Noctua"s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua"s proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan"s performance/noise efficiency.

NF-S12ANF-S12A

SSo2SSo2

NF-S12ANF-S12A

NF-S12A FLX scopeNF-S12A FLX scope

Integrated anti-vibration pads

Integrated anti-vibration pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.

SSO2 bearing

The NF-S12A features the further optimised second generation of Noctua"s renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.

Inner Surface Microstructures

With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.

Scope of delivery

  • NA-RC10 Low-Noise Adaptor (L.N.A)
  • NA-RC12 Ultra-Low-Noise Adaptor (U.L.N.A)
  • NA-AC1 3:4-pin adaptor cable
  • NA-EC1 30cm extension cable
  • 4x NA-AV1 anti-vibration mounts
  • Fan screws
s12as12a

Anti-Stall Knobs

The NF-S12A"s Anti-Stall Knobs reduce flow separation phenomena in medium to high impedance situations and thereby increase the fan"s stall margin. This means that the NF-S12A is even more versatile than its renowned predecessor and can achieve better performance on heatsinks and radiators.

NF-S12A PWM table NF-S12A FLX table NF-S12A ULN table NF-S12A PWM chromax.black.swap table
NF-S12A PWM NF-S12A FLX NF-S12A ULN NF-S12A PWM chromax.black.swap
Connector 4-pin PWM 3-pin 3-pin 4-pin PWM
Voltage 12V 12V 5V 12V
RPM Max: 1200 / Min: 300 1200 800 Max: 1200 / Min: 300
RPM with L.N.A. 900 900 600 -
RPM with U.L.N.A. - 700 - -
Acoustical Noise 17,8 dB(A) 17,8 dB(A) 8,6 dB(A) 17,8 dB(A)
Acoustical Noise with L.N.A. 10,7 dB(A) 10,7 dB(A) 6,7 dB(A) -
Acoustical Noise with U.L.N.A. - 7,4 dB(A) - -
Size (mm) 120x120x25 120x120x25 120x120x25 120x120x25
Colour Brown & Beige Brown & Beige Brown & Beige Black with swappable coloured anti-vibration pads

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