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Noctua

Q: Hi, should I get this or the Noctua NF-F12 for a case fan? Thanks.

If your fan location doesn't have any filters or obstructions then the S12a will be what you want, but if it does have any sort of filter, or resistance the fan has to pull through, you'll want an NF-P12. Several reviews have remarked that in a resistance based location the P12 works just as well as the F12, and does so with less noise. The F12 would only be better for high temp heatsinks with its higher RPM range.I personally own all 3 types and have an F12 on my CPU heatsink, 2 P12 fans as intakes that are behind a dust filter, and 1 S12a as a rear exhaust. I previously used 2 S12as as the intakes but they were really loud behind the filters.

Q: What is the difference between the PWM, the ULN and the FLX versions?

PWM is the most standard version. People who want to push a little extra air but still stay quiet and keep up with a mild overclock, these are also 4 pin.ULN is targeting users who hate sound. These are lower voltage and push less air.FLX is the dynamic fan, you can run it a little higher or lower watt and push a littler higher or lower air.Personally I can't see any reason to use anything but PWM. They even come with a free adapter to lower the voltage if for some insane reason this already super quiet fan isn't quiet enough.

Q: What is the cfm at min and max rpms?

For a given RPM there is a performance curve; Maximum CFM at minimum static pressure, minimum CFM at maximum static pressure and all the points in between.

Q: Are these sealed bearing fans?

From the Noctua FAQ:In order to ensure flawless operation over many years of usage, all Noctua fans come with a premium grade SSO bearing, which is fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

Product ID: 81820043

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Details

Product Dimensions
4.72"L x x
Brand
Noctua
Power Connector Type
4-Pin
Voltage
12 Volts
Cooling Method
Air
Compatible Devices
Desktop

🌀120mm high-efficiency airflow

🔇Ultra-quiet 17.8 dB(A) noise level

⚙️4-pin PWM for smart speed control

Frequently Bought Together

Noctua NF-S12A PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)

Noctua NF-A14 PWM, Premium Quiet Fan, 4-Pin (140mm, Brown)

Noctua NF-F12 PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)

Description

🌀 Stay cool, stay ahead — silent power that works as hard as you do.

DURABILITY THAT LASTS - Built to exceed 150,000 hours MTTF, this fan guarantees long-term reliability for your high-performance setup.
PRECISION PWM CONTROL - Automatic fan speed adjustment from 300 to 1200 RPM ensures optimal cooling without unnecessary noise or power use.
WHISPER QUIET COOLING - Experience near-silent airflow with advanced acoustic optimization, perfect for focused work or gaming marathons.
VIBRATION FREE OPERATION - Includes anti-vibration mounts to keep your system stable and noise-free, enhancing your workspace ambiance.
COMPLETE INSTALLATION KIT - Comes with Low-Noise Adaptor, extension and y-cables, plus mounting screws for effortless, flexible setup.

The Noctua NF-S12A PWM is a premium 120mm quiet fan designed for professional-grade PC cooling. Featuring a 4-pin PWM connector for automatic speed control between 300-1200 RPM, it delivers efficient airflow at just 17.8 dB(A) noise. Its award-winning design includes anti-stall knobs and advanced acoustic optimization for superior silent performance, backed by a robust lifespan exceeding 150,000 hours. Ideal for desktop chassis ventilation, it comes with anti-vibration mounts and all necessary accessories for easy installation.

Specifications

Product Dimensions	4.72"L x 4.72"W x 0.98"H
Brand	Noctua
Power Connector Type	4-Pin
Voltage	12 Volts
Cooling Method	Air
Compatible Devices	Desktop
Noise Level	17.8 dB
Material	Fibre-glass reinforced PBT
Maximum Rotational Speed	1200 RPM
Air Flow Capacity	107.5 Cubic Meters Per Hour
UPC	808111663660 863121543098 731215276828 846764214297 807320183181 842431014252 809394261574 803982961709
Global Trade Identification Number	04716123314929
Manufacturer	Noctua
Number of Items	1
Item model number	NF-S12A PWM
Item Weight	6.4 ounces
Item Dimensions LxWxH	8.5 x 1.5 x 6 inches
Color	Brown
Computer Memory Type	DIMM
ASIN	B00BEZZBFO
Is Discontinued By Manufacturer	No
Date First Available	March 15, 2013

Have a Question? See What Others Asked

Hi, should I get this or the Noctua NF-F12 for a case fan? Thanks.

What is the difference between the PWM, the ULN and the FLX versions?

What is the cfm at min and max rpms?

Are these sealed bearing fans?

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