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

(1512 Reviews)

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$13.17

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(10000 available )

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231 Ratings
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Reviews
  • TF

    > 3 day

    Great Product!

  • RCod

    > 3 day

    Perfect for me. I use this fan for my Hyper 212 in a pull push configuration. Nice and a quiet and it blows out a decent amount of air. I have had mine for a little over a year now and have not had any noise issues from the bearings yet. The little rubber pins that come with it are pretty cool as well. Very useful if your putting this fan against the case to prevent vibration noises. A great fan with a lot of extras in the box.

  • James&Danica

    > 3 day

    Just got these and they are wonderfully quiet. I got two fans to replace the two loud fans that I had already. While I really like how quiet it is, I have notice some changes in temps. To be fair, I put on the Low-Noise adapter on it so it isnt running at the full RPMs it can be. That being said Im only seeing 3-4 degrees higher overall while being nearly silent at about 800 RPMs while my other fans that I replaced were extremely loud and ran at 1500-1600 RPMs. I will take that ratio and If I really get fed up with the 3-4 degrees temp difference I will take off those adapters. The overall temps for the CPU is at the high end under moderate load 40-45 degrees Celsius. A lot of temp change in the CPU comes from the hot graphics card right under the CPU. This is with i7-2600K 3.4Ghz CPU and a Radeon HD 6950 video card (this card runs really hot, even under light/idle use).

  • LA Bill

    > 3 day

    Excellent case fan. Longest lasting brand I have used.

  • ernest

    > 3 day

    arrived early and working just fine....thxs

  • Bidoing

    > 3 day

    Now I know why everyone says Nocuta fans are the top of the line for air cooling. Absolutely amazing fans, nearly silent, move a ton of air, and easy to install. 5 stars - will buy more Nocuta poop colored fans in the future.

  • Panther

    > 3 day

    Great cooling fan, though I have yet to see just how long it actually lasts, but based on the built quality (and the six year warranty), I dont expect longevity to be an issue. The fan is quiet and stable with little vibration. It comes with two resistors that plug in-line to reduce the fan speed if needed, a long extension connector, a 4-pin Molex connector, and both screw and rubber mounts. Unfortunately, these fans are a tad expensive, making them difficult to use on a regular basis. Also, I dont care for the over-the-top packaging. How about some bulk versions and reducing the price on these?

  • Jeff Kissick

    06-06-2025

    Im using this as a bedside fan with the pwm knob controller. I want to be able to still hear things going on outside and its quiet enough for that. If you crank it up full RPM, you can hear it a bit as a white noise but its still a lot quieter than any 3 speed fan Ive been able to find. Below maybe 70%, you pretty much cant hear it. My main problem is that its kind of ugly to sit on a nightstand.

  • 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.

  • Aaron Runolfsdottir III

    Greater than one week

    They are Noctuas. If you are looking at these fans, then you already know that Noctuas are pretty much the best PC fans money can buy. They are well known for their build quality, quiet operation, and poor aesthetics. I personally like how they look. They are unique in their own way.

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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