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Product discontinued. Successor model: NF-S12A ULN

Succeeding the vastly successful NF-S12, the NF-S12B is a next generation quiet fan featuring Noctua's advanced SCD2 technology as well as a highly optimised blade geometry with Bevelled Blade Tips that improves its award-winning predecessor's airflow efficiency by up to 10%. Topped off with Noctua's time-tested SSO-Bearing, 6 years warranty and super-slow 700/500 rpm speed settings, the NF-S12B ULN is a premium quality fan for ultra-low-noise applications where maximum quietness has top priority.


More information:
NF-S12B Blade Design
NF-S12B & NF-P12: Technical Backgrounds
Which fan is right for me?

Details
Highly optimised impeller with Bevelled Blade Tips

Highly optimised impeller with Bevelled Blade Tips

Thanks to its further refined blade geometry with extended leading edges and Bevelled Blade Tips, the NF-S12B achieves up to 10% more airflow and static pressure than its much acclaimed predecessor at the same noise level.
2 speed settings for maximum quietness

2 speed settings for maximum quietness

Providing 700 and 500 rpm speed settings via the supplied adapter, the ULN (Ultra-Low-Noise) version is tailor made for serious silent enthusiasts who demand super-slow running speeds and utmost quietness of operation.
Smooth Commutation Drive 2

Smooth Commutation Drive 2

The latest version of Noctua's advanced SCD drive system ensures superb running smoothness by eliminating torque variations and switching noises.
SSO-Bearing

SSO-Bearing

Noctua's time-tested SSO-Bearing technology has become synonymous with supremely quiet operation and exceptional long-term stability.
NF-S12B ULN
FAN Specification
Size
120x120x25 mm
Bearing
Rotational Speed (+/- 10%)
700 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
500 RPM
Acoustical Noise
6,8* dB(A)
Acoustical Noise with U.L.N.A.
5* dB(A)
Static Pressure
0,44 mm H₂O
Static Pressure with U.L.N.A.
0,23 mm H₂O
MTBF
> 150.000 h
Scope of Delivery
  • Ultra-Low-Noise Adaptor (U.L.N.A.)
  • 4 Vibration Compensators
  • 3:4-Pin Adaptor
  • 4 Fan Screws
Warranty
6 years
NF-S12B ULN
27.09.2009 // Hardware.xz.lt
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NF-S12B ULN Review

Ventiliatorių tvirtinau korpuso priekyje, kad būtų pasiektas didesnis aušinimo efektyvumas. Tvirtinimas labai nesudėtingas. Naudojau guminius vibraciją sugeriančius tvirtinimo elementus. Jei nebūtų galimybės tvirtinti guminiais elementais, galėsite tvirtinti varžtais.
Test verdict: "Įdomu tai, kad dvigubai mažesnėmis apsukomis veikiantis ULN ventiliatorius geba rodyti praktiškai identišką aušinimo efektyvumą standartiniam Cooler Master aušintuvams. NF-S12B ULN buvo toks tylus, kad net buvo kilusi mintis, kad jis iš vis nesisuka." (Eimantas Balta, Hardware.xz.lt)
11.08.2009 // Technews.lt
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NF-S12B ULN Review

Įdomu tai, kad dvigubai mažesnėmis apsukomis veikiantys ULN ventiliatoriai geba rodyti praktiškai identišką aušinimo efektyvumą standartiniams Chieftec aušintuvams parduodamiems kartu su korpuso. [...] Kalbant apie keliamą triukšmą, turiu pasakyti, kad ULN ventiliatoriai net ir be adapterių yra tokie tylūs, kad jų sukeliamo garso už 0,5 m visiškai nesigirdėjo, todėl neturime ir duomenų.
Test verdict: "Atvirai pasakius, nesitikėjau tokių rezultatų iš 700 aps./min sparta veikiančio ventiliatoriaus. Efektyvumu trys NF-S12B ULN prilygo dvigubai spartesniems standartiniams Chieftec aušintuvams ir buvo tokie neįtikėtinai tylūs, kad kelis kartus mane užklupo mintis, kad sistema apskritai nustojo veikusi." (Darius Buinauskas, Technews.lt)
28.06.2009 // TopReviewShop.com
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NF-S12B ULN Review

The Noctua NF-S12B ULN is an excellent choice for people who want the quietest computer possible.
Test verdict: "If you need the quietest cooling possible, then the NF-S12B ULN is your fan." (William Ford, TopReviewShop.com)
21.06.2009 // Blog.Hitechpc
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NF-S12B ULN Review

Comme on le voit immédiatement, les NF S12B survolent le test. A vitesses égales, ou inférieures, ils sont plus performants que le NF P12. Comme dans l’autre test, le Sanyo Denki est très performant aussi, mais avec un effet de bourdonnement insupportable. Les OCZ et CoolerMaster sont, à vitesses plus élevées, moins performants. C’est encore les Noctua qui s’en sortent avec les honneurs.
Test verdict: "Les NF S12B FLX et ULN sont LES ventilateurs qu’ils vous faut pour avoir un flux d’air optimal dans votre boitier. En plus d’apporter une meilleure circulation d’air dans le boitier, ils sont, même à vitesse maximale, plus silencieux que la plupart des autres 120mm. Et pour ne rien gâcher, ils sont quasi aussi performants que les NF P12 pour refroidir vos processeurs. Ils répondent donc aux contraintes des plus exigeant, c’est à dire très performant pour un minimum de bruit!" (Simioli Jean-Philippe, Blog.Hitechpc)
25.05.2009 // ExtremePC.fr
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NF-S12B ULN Review

* Qualité générale
* 2 possibiltés de réglages avec adaptateur ULNA
* Rapports flux d'air/bruit, flux d'air/vitesse optimisés
* Silence à toutes fréquences de rotations
* Bundle très fourni
* Consommation très faible
* Roulements SSO Bearing
Test verdict: "En ce qui concerne le NF-S12B ULN, ce ventilateur est très discret, et c'est bien là sa meilleure performance. Conçu pour être silencieux à des vitesses de rotations très basses, le pari est réussi. Ajoutez à cela une consommation ultra faible, et vous obtiendrez une machine à silence de qualité made in Noctua." (David Henriet, ExtremePC.fr)
18.05.2009 // VirtuaLegion.com
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NF-S12B ULN Review

- Máximo silêncio
- Qualidade de construção
- Melhorias em relação às S12 originais
- Longevidade
- 6 anos de garantia
- Acessórios incluídos
Test verdict: "É nesta última situação em que a S12B ULN se enquadra melhor. A menor rotação e o menor ruído são ideais para um sistema refrigerado a água, e o airflow que produz é suficiente para manter a circulação de ar dentro da case." (Luis Dias, VirtuaLegion.com)

Information Sheet (PDF)

My fan doesn’t spin when I start up the PC - is it faulty?

If you've connected the fan directly (or using the supplied Low-Noise or Ultra-Low-Noise-Adaptors) to your mainboard, it's possible that the mainboard's automatic fan controller doesn't provide the required starting voltage due to the low CPU temperature. Please verify whether the fan starts spinning at higher CPU temperatures, remove any Low-Noise or Ultra-Low-Noise Adaptors, deactivate your mainboard's automatic fan controller in the BIOS or connect the fan directly to the power supply using the supplied 3:4-pin adaptor.

Can I run Noctua 3-pin fans on 4-pin PWM connectors and use my mainboard’s automatic fan controller?

You can simply connect our fan's 3-pin connector to the 4-pin PWM sockets of today's mainboards so that the fourth pin that transmits the PWM signal is left blank (due to the shape of the connector, there's no danger of reversing polarity). Some mainboards (e.g. current Gigabyte models) are capable of controlling fans not only via PWM, but also by adjusting the supplied voltage. In some cases, this may require you to change BIOS options like "Fan Control Mode" from "PWM" to "Voltage" or "Analog". Please consult your mainboard's manual in this regard. However, some mainboards use an "auto" setting by default that automatically chooses PWM or voltage based regulation according to the connected fan. Automatically controlling the fan speed may not possible on mainboards that pulse the power rather than lowering the fan voltage.

PWM PWM

The fan doesn’t start with the Ultra-Low-Noise Adaptor (ULNA)!

Unfortunately, many Gigabyte mainboards use a special control circuit that can lead to start-up problems in conjunction with the Ultra-Low-Noise Adaptor (ULNA). This control circuit remains active even when automatic fan control is disabled in the BIOS. In these cases, please use the fan without the ULNA or connect it directly to the power supply (or an external fan controller) in order to ensure reliable operation with the ULNA.

How can I check if my 4-pin fan header supports PWM?

Some mainboards feature 4-pin fan headers that actually don‘t use a PWM signal on Pin 4 to control the fan speed but rather reduce the voltage on Pin 2 (like a standard 3-pin fan header). As the fan speed at minimum voltage is usually higher than the speed at 20% PWM duty cycle, the fan can not reach as low minimum speeds under voltage control as under PWM control. Please refer to your mainboard manual to check whether or not your mainboard has 4-pin fan headers that control the fan speed by reducing voltage on Pin 2 rather than by changing the PWM duty cycle on Pin 4:

4 pin fan header types

Note that mainboard manufacturers use different terms to indicate that Pin 4 is not being used for PWM control (e.g. “+5V”, “VCC” or “NC”), but if one of these terms is used, you can be sure that the fan header does not support PWM. If Pin 4 is described as “Speed Control” or “PWM” or the like, you can be sure that the fan header supports PWM.

Unfortunately, the description of Pin 2 is not always a clear indication as some manufacturers use terms such as “Fan PWR” or “Power” for both types of fan headers. However, if Pin 2 is described as “Speed Control”, you can also be sure that the fan header does not support PWM based speed control. If Pin 2 is described as “+12V”, this is a clear indication that the fan header supports PWM.

Please also note that in some cases, the descriptions of the pin layouts in the mainboard manuals may not be correct and some models actually allow you to switch the fan headers from voltage control mode to PWM control mode in the BIOS even though the pin descriptions do not indicate PWM support. We thus recommend to look for these options in the BIOS before taking other measures. In case of doubt, please contact your mainboard manufacturer.


If your mainboard features other 4-pin fan headers that use PWM for speed control, you can run multiple fans from these headers using Y-split cables. Make sure not to exceed the specified maximum power draw of the fan headers (usually 10-12W) though.

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