heading

Product discontinued. Successor model: NH-U12P SE2

The NH-U12P continues the legacy of Noctua's classic NH-U coolers, which won over 150 awards and recommendations from leading international websites and magazines. While retaining the successful design and the well-proven SecuFirm™ mounting system, the newest revision has been reworked for enhanced main board compatibility and now comes with Noctua's NT-H1 pro-grade thermal compound. Fitted with the new NF-P12 premium fan, the NH-U12P brings its predecessors' much-acclaimed quiet cooling performance to a whole new level!
Details
4 dual heat pipes

4 dual heat pipes

4 dual heat pipes, soldered joints and widely-spaced aluminium cooling fins guarantee optimal heat dissipation even at low fan speeds.
Award winning NH-U design

Award winning NH-U design

Noctua's NH-U coolers allow for perfect airflow direction and have received more than 150 awards and recommendations from leading international websites and magazines.
NF-P12 premium fan

NF-P12 premium fan

The NF-P12 has been specifically developed for applications like CPU cooling and brings the performance of the NH-U12 to a whole new level. Thanks to psycho-acoustic optimizations and Noctua's premium-grade SSO-bearing, the NF-P12 achieves exceptional quietness and long-term stability.
Improved compatibility

Improved compatibility

Thanks to its raised fin-stack, the NH-U12P offers improved compatibility with main boards featuring very high chipset coolers.
SecuFirm™ multi-socket mounting system

SecuFirm™ multi-socket mounting system

Noctua's professional SecuFirm™ mounting system for LGA 775, AM2, AM2+ and AM3 provides superior reliability and contact pressure.
Incl. Noctua NT-H1 high-end thermal compound

Incl. Noctua NT-H1 high-end thermal compound

Noctua's NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance, excellent ease-of-use and long-term stability.
NH-U12P
Cooler Specification
Intel Socket LGA 775, AMD AM2, AM2+ & AM3
Height (without fan)
158 mm
Width (without fan)
126 mm
Depth (without fan)
71 mm
Height (with fan)
158 mm
Width (with fan)
126 mm
Depth (with fan)
95 mm
Weight (without fan)
600 g
Weight (with fan/s)
770 g
Material
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Application
Intel all frequencies, AMD all frequencies
Fan compatibility
120x120x25mm / 120x120x38mm (2 fans can be installed)
Scope of delivery
  • NF-P12 premium fan
  • Mounting-clips for 2 fans
  • Ultra-Low-Noise-Adaptor (U.L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm™ mounting kits for LGA & AM2(+)
Warranty
6 Years
FAN Specification
Bearing
Blade Geometry
Rotational Speed (+/- 10%)
1300 RPM
Rotational Speed with L.N.A. (+/- 10%)
1100 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
900 RPM
Acoustical Noise
19,8 dB(A)
Voltage Range
12 V
MTTF
> 150.000 h
NH-U12P
07.10.2009 // Lab501.ro
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NH-U12P Review

Noctua NH-U12P – un cooler complet ce arata calitatea si eficienta Noctua, el reuseste sa se claseze foarte sus in ciuda faptului ca nu dispune de o arhitectura dusa la extrem. Cu doar patru conducte de caldura, cu lamele putine si greutate mica el reuseste sa tina piept cu bine monstrilor racirii cu aer, demonstrand ca o arhitectura bine gandita alaturi de o calitate a constructiei foarte buna au o influenta hotaratoare in obtinerea unei performante de top. Bravo Noctua [...].
Test verdict: "Calitatea si performanta foarte buna de care au dat dovada produsele Noctua au facut ca numele companiei sa fie sinonim cu cel de calitate. Noctua NH-U12P nu face exceptie de la regula" (Tudor Badica, Lab501.ro)
21.09.2009 // PCSilenzioso.it
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NH-U12P Review

La ventola a corredo del dissipatore è semplicemente una delle migliori ventole attualmente in circolazione. Caratteristica di questa ventola è il fatto che la stessa è stata costruita appositamente per il raffreddamento dei dissipatori. Essa ha una notevole pressione statica, caratteristica necessaria per passare attraverso le fitte maglie dei dissipatori, dei radiatori per liquido e delle fitte griglie dei case.
Test verdict: "L'NH-U12P si è dimostrato eccellente e le prestazioni lo pongono tra i migliori dissipatori attualmente in commercio. La dotazione è completa e la ventola in dotazione insieme alla pasta aumentano il valore di tale prodotto." (Luca Forresu, PCSilenzioso.it)
16.09.2009 // PCLab.pl
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NH-U12P Review

* Jeden z najwydajniejszych schładzaczy w teście!
* Niklowana konstrukcja
* Solidny i łatwy montaż
* Możliwość montażu w dwóch pozycjach na podstawce AM2/AM3
* Szeroko rozstawione blaszki sprzyjają cichej pracy wentylatora
* Możliwość otrzymania za darmo zapinek dla najnowszych podstawek Intela
* Dobrej jakości pasta w komplecie
* Znakomity wentylator w komplecie
* Aktualizowana lista kompatybilnych płyt głównych na stronie Noctua
Test verdict: "Schładzacz luksusowy - świetna wydajność i najwyższa jakość. Wsparcie producenta, jakiego próżno szukać u konkurencji." (Filip Straburzy?ski, PCLab.pl)
25.08.2009 // Hardware Secrets
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NH-U12P Review

Noctua NH-U12P is a CPU cooler with excellent performance, being also very quiet. Its performance was compatible to some of the best coolers we tested, like Thermaltake TMG-IA1, and does not keep it behind even to Cooler Master V10. In terms of noise level, it was also one of the quietest in our recent reviews. Its general looks is also very cool, with its solid aspect and robustness notewhorty. Its fins are thicker than in most cooler, and they are not sharp. In few words: it is a high quality cooler.
Test verdict: "So, if you are looking for a well-made CPU cooler, quiet and with excellent performance [...], Noctua NH-U12P is a nice buy." (Rafael Otto Coelho, Hardware Secrets)
23.08.2009 // Clube do Hardware
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NH-U12P Review

O Noctua NH-U12P é um cooler de excelente desempenho e muito silencioso. Seu desempenho foi compatível com alguns dos melhores já testados por nós até agora, como o Thermaltake TMG-IA1, e não ficando atrás sequer do Cooler Master V10. Em termos de nível de ruído, ele também foi um dos mais silenciosos dessa nossa série de testes. Seu aspecto geral também é muito bom, com uma firmeza e robustez dignas de nota. Suas aletas, mais grossas do que na maioria dos coolers, não são afiadas. Em suma, a qualidade geral do produto é muito boa.
Test verdict: "O U12P não é barato, mas encontra-se dentro da faixa média de preços dos seus concorrentes. Assim, se você está procurando um cooler bem construído, silencioso e de excelente desempenho [...], o Noctua NH-U12P é um a boa compra e por isso ganha o selo de Produto Recomendado do Clube do Hardware." (Rafael Otto Coelho, Clube do Hardware)
22.07.2009 // InfoHW.com
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NH-U12P Review

O Noctua NH-U12P continua a demonstrar o seu valor, apesar de ser o dissipador que á mais tempo está no mercado, este continua a demonstrar toda a sua qualidade e desempenho.
Test verdict: "A Noctua continua a dar cartas, o NH-U12P, continua a ser um dos melhores dissipadores do mercado" (Vitor Costa, InfoHW.com)
06.07.2009 // Revioo.com
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NH-U12P Review

Au niveau des nuisances sonores on est bien loin des 49dBA du Zerotherm avec 38dBA pour le Noctua et on est d’un dBA plus silencieux qu’un Mugen 2 qui obtient 39dBA.
Test verdict: "Le Noctua NH-U12P ne faillit pas à sa réputation, c’est un ventirad performant et discret. Au format tour son bundle autorise voire encourage le montage d’un deuxième ventilateur en push-pull." (Vincent Valmond, Revioo.com)
24.06.2009 // Maximum PC
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NH-U12P Review

We like Noctua's SecuFrim mounting system - two mounting brackets screw into a backplate and the cooler is fastened to the brackets via a pair of spring screws. This makes installation considerably easier than on similar models. [...] Great performance, multiple speed options, quiet at any setting.
Test verdict: "The Noctua NH-U12P is one of the best coolers we've ever tested, and quite quiet at that." (Nathan Edwards, Maximum PC 08/09)
19.06.2009 // PC Magazine Bulgaria
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NH-U12P Review

Това, с което се отличава от другите модели, обаче е изключително ниското ниво на шум по време на работа.
Test verdict: "Ако сте любител на овърклока (а и не само) и търсите максимално тих въздушен охладител, то определено Noctua NH-U12P си заслужава да бъде обмислен катопотенциален вариант." (Dobril Dokov, PC Magazine Bulgaria)
16.06.2009 // Hardware-Test.dk
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NH-U12P Review

Nu er der skruet op for CPU´en, og hvad syv Søren skete der lige der! Box-køleren er stået af på dette tidspunkt, hvilket jo absolut var forventet. Ellers var der jo ikke nogen grund til at investere i andre køleløsninger. Men prøv lige at se de grafer igen. Noctua NH-U12P smutter let og elegant forbi Xigmatek og NorthQ, men også V8´eren og Ultra-120 Extreme smutter den forbi. Ultra´en nærmest drøner den forbi. Det havde jeg ikke ventet, det må jeg indrømme. Jeg havde forventet at den ville mixe sig ind med V8 og TRUE, men at den slår dem begge, og næsten efterlader TRUE i støvet, det overraskede mig.
Test verdict: "Nu har jeg så haft besøg af Noctua NH-U12P. Og det var da en dejlig gæst at have. Pænt og ikke for poppet udseende, velproportioneret, godt skruet sammen, lækker-lækker finish, ikke for støjende og leverer i den grad varen, når man skruer op for varmen. Så kan jeg egentlig ikke forlange meget mere. Er der nogen der kan det? Der er faktisk ikke rigtig noget, der sådan rigtig har drillet mig eller irriteret mig, i min tid med NH-U12P." (Jakob Lund Laursen, Hardware-Test.dk)

Installation Manual (PDF)

Information Sheet (PDF)

FAQs

I've got 2 adapter cables with the cooler. What's the difference between these cables?

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

My unlocked Intel CPU is running too hot although my heatsink supports the specified TDP, what's the problem?

Can I keep using the backplate / mounting system of my previous Noctua cooler for my new one?

Which Noctua CPU coolers are compatible with Intel LGA2066?

Which Noctua CPU coolers are compatible with AMD AM4 (Ryzen)?

How should I clean my Noctua cooler?

What Thermal Design Power (TDP) is this cooler recommended for and how much Watt (W) of heat can it dissipate?

My case supports CPU coolers of up to XXXmm height, which model should I choose?

I have difficulties installing the cooler, can you help?

How much torque should be applied when tightening the screws of a Noctua CPU cooler?

How can I determine if the motherboard’s UEFI BIOS is overclocking my processor by default and deactivate this automatic overclocking?

Can I install a Noctua cooler in my system from Acer, Dell, HP or Lenovo?

Can I upgrade my existing Noctua cooler to socket TR4 or SP3?

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

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

How can I connect 2 fans?

Is the cooler compatible with socket AM2+ and AM3?

Is the high weight dangerous for the CPU or socket?

Is it possible to mount fans with a greater height than 25mm?

Is it possible to run two fans at a time?

Should the fan be mounted sucking away from the heat-sink or blowing onto the heat-sink?

On which side of the heat-sink should the fan be installed?

Is it possible to cool my CPU without a fan (passive) using Noctua coolers?

How to install the fan using the supplied steel clips?

How much clearance for RAM or chipset coolers does the NH-U12P provide?

What can I do if the fan blocks my RAM or chipset cooler?

Which mainboards are compatible with the NH-U12P?

Can I use Noctua fans on my fan controller?

I can’t spread the thermal compound by turning the cooler as described in the manual!

Which Noctua fan or CPU cooler should I buy? How to choose the right model?

I've got 2 adapter cables with the cooler. What's the difference between these cables?

The Low-Noise-Adapter (L.N.A.) and Ultra-Low-Noise-Adapter (U.L.N.A.) reduce the speed of the fan to 1100 / 900 rpm:

Vibration Compensators Installation

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.

My unlocked Intel CPU is running too hot although my heatsink supports the specified TDP, what's the problem?

Intel's unlocked CPUs (K, X and C suffix) can dissipate more heat than indicated by the TDP specification if
  1. the TDP limits are extended or disabled in the motherboards' BIOS.
  2. the motherboard applies automatic overclocking by default, e.g. by raising the supply voltage of the CPU and using higher Turbo-Mode multipliers.
  3. some software creates untypical loads, e.g. Prime95 with AVX2 support and a) and/or b) apply.

This can lead to temperature issues, especially when using smaller coolers or compact cases.

The actual power draw of the processor can be monitored with software provided by the motherboard vendor or with 3rd party tools like HWInfo or HWMonitor.

If you encounter temperature issues (>90°C) and notice a higher than specified power draw, please ensure that no automatic overclocking is applied and limit the TDP to the specified value by choosing appropriate BIOS settings.

For Kaby Lake CPUs, it may also help to lower the CPU clock speed for applications that heavily use the AVX instruction set, which can lead to higher loads and power draw. This option is usually referred to as “AVX offset” and makes it possible to lower the multiplier specifically for AVX based applications without reducing performance when using other instruction sets. Depending on the quality of the CPU and the programs being used, a reduction of 2-3 steps usually gives very good results.

Please contact your motherboard vendor for details if you have trouble finding the appropriate settings in the BIOS.

All our TDP recommendations are based on thorough testing with the default values specified by Intel using popular applications such as Asus Realbench and prime95. Please note, however, that prime95 creates a particularly high load that goes beyond typical application scenarios and this leads to elevated temperatures. We thus recommend using other programs such as Realbench for checking the stability and temperatures of the CPU in realistic scenarios.

Can I keep using the backplate / mounting system of my previous Noctua cooler for my new one?

Most Noctua SecuFirm™ mounting parts are cross-compatible, so if you’re replacing one Noctua cooler with another, it is usually possible to keep the original backplate and/or mounting system in place in order to re-use it for the new cooler. If you had your previous Noctua cooler installed on an Intel LGA115x (LGA1156, LGA1155, LGA1151, LGA1150), LGA2011 (LGA2011-0, LGA2011-3) or LGA1366 system and replace it with an NH-U14S, NH-U12S or NH-U9S, you only need to replace the original mounting bars with the NM-IMB3 ones supplied with the new cooler. For all other models, you can keep the entire mounting system in place on the aforementioned Intel sockets. On AMD AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+, you only need to replace the original mounting bars with the ones supplied with the new cooler.

Which Noctua CPU coolers are compatible with Intel LGA2066?

Due to the heatsink mounting mechanism being identical on LGA2011 and LGA2066, Noctua’s SecuFirm2™ mounting systems for LGA2011 also support Intel’s upcoming ‘Basin Falls’ X299 HEDT (High End Desktop) platform for ‘Skylake-X’ and ‘Kaby Lake-X’ processors. Most current Noctua coolers already include SecuFirm2™ mounting systems for LGA2011 and can thus be used on LGA2066 motherboards without any upgrades or modifications.

The following models include a mounting-kit for socket LGA2011/2066 and are thus compatible out of the box:

NH-C14S
NH-D14 SE2011
NH-D15
NH-D15S
NH-D9L
NH-L12
NH-L9x65
NH-U12S
NH-U12DX i4
NH-U14S
NH-U9DX i4
NH-U9S

The following models can be made compatible with the LGA2011/LGA2066 sockets free of charge using the NM-I2011 upgrade-kit:

NH-C12P
NH-C12P SE14
NH-C14
NH-D14
NH-D15 SE-AM4
NH-U12S SE-AM4
NH-L9x65 SE-AM4
NH-U12
NH-U12F
NH-U12P
NH-U12P SE1366
NH-U12P SE2
NH-U9
NH-U9B
NH-U9B SE2
NH-U9F

The following models can be made compatible with the LGA2011/LGA2066 sockets using the NM-I2011 upgrade-kit but are not eligible for Noctua‘s free mounting offer, so users have to purchase the kit at local resellers:

NH-U12DO (Note that the A3 version is not compatible!)
NH-U12DX
NH-U12DX 1366
NH-U9DX 1366
NH-U9DO (Note that the A3 version is not compatible!)

The following models are not compatible with the LGA2011/LGA2066 sockets and can not be upgraded:

NH-L9a
NH-L9i
NH-U12DO A3
NH-U9DO A3

Which Noctua CPU coolers are compatible with AMD AM4 (Ryzen)?

The following models include a mounting-kit for socket AM4 and are thus compatible out of the box:

NH-D15 SE-AM4
NH-U12S SE-AM4
NH-L12S
NH-L9x65 SE-AM4
NH-L9a-AM4

The following models can be made compatible with the AM4 socket free of charge using the NM-AM4 upgrade-kit:

NH-C12P
NH-C12P SE14
NH-C14
NH-C14S
NH-D14
NH-D14 SE2011
NH-D15
NH-D15S
NH-D9L
NH-L12
NH-L9x65
NH-U12
NH-U12F
NH-U12P
NH-U12P SE1366
NH-U12P SE2
NH-U9
NH-U9B
NH-U9B SE2
NH-U9F

The following models can be made compatible with the AM4 socket free of charge using the NM-AM4-UxS upgrade-kit:

NH-U14S
NH-U12S
NH-U9S

The following models can be made compatible with the AM4 socket free of charge using the NM-AM4-L9aL9i upgrade-kit:

NH-L9a
NH-L9i

The following models can be made compatible with the AM4 socket using the NM-AM4 upgrade-kit but are not eligible for Noctua‘s free mounting offer, so users have to purchase the kit at local resellers:

NH-U12DO (Note that the A3 version is not compatible!)
NH-U12DX
NH-U12DX 1366
NH-U12DX i4
NH-U9DX i4
NH-U9DX 1366
NH-U9DO (Note that the A3 version is not compatible!)

The following models are not compatible with the AM4 socket and can not be upgraded:

NH-U14S TR4-SP3
NH-U12S TR4-SP3
NH-U9 TR4-SP3
NH-U12DO A3
NH-U9 DO A3

How should I clean my Noctua cooler?

Dust: Fans and heatsinks inside computer cases tend to accumulate dust over longer periods of usage. In order to maintain maximum performance, please clean your fan and heatsink regularly. For cleaning, please first remove the fan from the heatsink and clean it using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please do not use a vacuum cleaner as this may apply excessive force to the fan and do not put the fan under running water as water residues inside the motor may lead to short circuits. Please also 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. Before reinstalling the fan, clean the heatsink itself with a duster or vacuum cleaner. Do not use water to clean the cooler. Finally put the fan back on and connect it to your motherboard fan header or fan controller.
Thermal paste residues: Whenever you take off the heatsink from the CPU, we recommend to clean the CPU as well as the base of the cooler before re-applying thermal paste and re-installing the cooler. You can either just wipe the base and the CPU clean with a dry, lint-free tissue or, for more thorough cleaning, use a lint-free tissue moistened with either a mild solution of washing-up liquid or isopropyl alcohol. Do not put the cooler or CPU under running water. Note that both the base of the heatsink and the CPU should be dry, free from residues of thermal compound and free from grease before re-applying thermal paste and re-installing the cooler.

What Thermal Design Power (TDP) is this cooler recommended for and how much Watt (W) of heat can it dissipate?

Please refer to our TDP guide for information on maximum recommended TDP and heat dissipation.

My case supports CPU coolers of up to XXXmm height, which model should I choose?

Please refer to our TDP guide in order to select the cooler that offers the best cooling performance at a given height.

I have difficulties installing the cooler, can you help?

Please refer to the installation manual and our video installation guides for detailed instructions on how to install the cooler.

How much torque should be applied when tightening the screws of a Noctua CPU cooler?

All screws should be tightened gently until they stop without using excessive force. Please do not exceed the following values for maximum tightening torque:
Screw typeMax. torque
NM-SSC1 screws for fixing the fastening brackets to the base of the heatsink0.5 Nm
NM-ITS1 thumb screws for fixing Intel mounting bars0.5 Nm
NM-ALS1 screws for fixing AMD mounting bars0.6 Nm
Spring-loaded screws for fixing the heatsink to the mounting bars0.6 Nm

How can I determine if the motherboard’s UEFI BIOS is overclocking my processor by default and deactivate this automatic overclocking?

Most motherboard vendors allow their overclocking-enabled products (e.g. those with Intels X- or Z-series chipsets) to run the processor at increased clock speeds by default, without requiring any user action at all. Since TDP (Thermal Design Power) limits are usually also disabled by default, this leads to the CPU exceeding the rated TDP to a varying degree, depending on the used applications and their workloads. Due to the increased heat output of the CPU, you may see higher CPU temperatures than expected.

In order to find out if your motherboard is overclocking your processor by default, please enter the UEFI BIOS and select the “advanced” or “overclocking” menu. There you should be able to find options such as “MultiCore Enhancement” (options: enabled/disabled), “CPU Ratio Apply Mode” (options: all/per core) or similar. To disable the automatic overclocking, adjust the settings either to “disabled” or “per core” and make sure that the individual multipliers match the original specifications.

In doubt, please contact your motherboard vendor for detailed instructions on how to disable this feature.

Can I install a Noctua cooler in my system from Acer, Dell, HP or Lenovo?

Systems from Acer, Apple, Dell, HP, Lenovo or other major brands often use motherboards which differ slightly from the specifications issued by Intel and AMD. While those changes are usually subtle, they can lead to compatibility issues with coolers that were built to comply with these specifications.

Even in case the cooler is mechanically compatible and can be installed, other issues can occur, e.g. proprietary fan connectors, BIOS errors due to a low fan speed, shutdowns, etc. Some of these problems can be avoided with some technical knowledge, but especially BIOS related issues can often not be resolved.

Due to the large number of possible issues that cannot be resolved with different mounting parts alone, Noctua does not officially support systems from Acer, Apple, Dell, HP, Lenovo or other major brands.

Can I upgrade my existing Noctua cooler to socket TR4 or SP3?

Unfortunately, it is not possible to upgrade existing Noctua heatsinks to support the AMD TR4 and SP3 sockets for Ryzen Threadripper (X399) and Epyc CPUs. TR4/SP3 CPUs have much bigger heatspreaders (as compared to e.g. LGA2066 or AM4 processors) and the contact surfaces of standard Noctua heatsinks would cover only about half of these heatspreaders, which would result in insufficient cooling performance. On top of that, the heatpipes of bigger cooler models like the NH-D15 or NH-D15S would completely block the RAM slots on many TR4/SP3 motherboards. For this reason, Noctua has introduced the new NH-U14S TR4-SP3, NH-U12S TR4-SP3 and NH-U9 TR4-SP3 cooler models that feature bigger contact surfaces and have been tailored to fit TR4 and SP3 systems. Please choose these models for AMD Ryzen Threadripper and Epyc systems.

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 connect 2 fans?

When using 2 fans, please connect one of the fans to the CPU-Fan header and the second fan to one of the Case-Fan headers of your mainboard. Alternatively, you can also use a 3-pin Y-cable in order to run both fans via the CPU-Fan header. Such cables are available in specialised retail stores.

Is the cooler compatible with socket AM2+ and AM3?

Yes. As AM2, AM2+ and AM3 are mechanically identical, the cooler is compatible with all three sockets.

Is the high weight dangerous for the CPU or socket?

No. Noctua coolers possess an extremely reliable SecuFirm™ mounting system. Thanks to the screw connection with the backplate on the rear side of the motherboard, the exceedance of the weight recommendations by Intel and AMD common among high-end coolers is completely unobjectionable.

Is it possible to mount fans with a greater height than 25mm?

Yes. The fan mounting clips grip to the screw holes in the lower edge of the fan frame and hence work with all fans regardless of their height. However, problems with the mounting of the fan can occur due to other parts within the case or fans with special frame designs, where the clips can't grip to the screw holes in the lower edge of the frame.

NH-U fan mounting

Is it possible to run two fans at a time?

Yes. Using the 4 supplied fan clips, you can mount two 120mm fans on the NH-U12(F/P) and two 92mm fans on the NH-U9(F/B).

Should the fan be mounted sucking away from the heat-sink or blowing onto the heat-sink?

Please install the fan blowing onto the heat-sink.

NH-U Airflow

If you're using two fans, please install them so that one blows onto the heat-sink and the other sucks the air away from the other side.

On which side of the heat-sink should the fan be installed?

Please install the fan so that the hot air can be disposed as good as possible either through the rear case fan (Airflow Option 1) or through the power supply (Airflow Option 2).

NH-U Airflow

Is it possible to cool my CPU without a fan (passive) using Noctua coolers?

Noctua coolers weren't originally designed for passive operation although the cooling performance is sufficient in many cases. Unfortunately, it is impossible for us to indicate whether a certain CPU can or cannot be cooled without a fan, as this depends on various factors such as case temperature, case ventilation or the orientation of the socket. Generally, we recommend using a fan in the first instance and then lowering RPM while constantly monitoring the temperature.

How to install the fan using the supplied steel clips?

First hook the clip into the notch of the heatsink:

Vibration Compensators Installation

Then hook the endings of the clips into the mounting holes of the fan:



Vibration Compensators Installation

How much clearance for RAM or chipset coolers does the NH-U12P provide?

The NH-U12P provides 40mm clearance for near-socket components:

Vibration Compensators Installation

What can I do if the fan blocks my RAM or chipset cooler?

In order to increase clearance, you can easily move the fan up a few fins as show below:

Vibration Compensators Installation

Which mainboards are compatible with the NH-U12P?

Please consult our mainboard compatibility list for information about compatible mainboards.

Can I use Noctua fans on my fan controller?

Our fans are compatible with the vast majority of fan controllers on the market. However, there is a compatibility issue with a few models such as the Zalman ZM-MFC2 and Bitfenix Recon, which apply Pulse Width Modulation (PWM) on the 12V line and use an unfavourable PWM carrier frequency. This can create an oscillation when used with certain fans, which will result in the fan speeding up and down. We therefore recommend not using the Zalman ZM-MFC2 or Bitfenix Recon with our fans.

I can’t spread the thermal compound by turning the cooler as described in the manual!

Due to the new LGA mounting bars with screw threads that facilitate the installation process, there's little room to turn the cooler as described in step 4 of the supplied manual. There's nothing to worry about though, as you can still turn the cooler by a few millimetres in order to help the thermal compound spread. We've also made the compound slightly less viscous so that the contact pressure of mounting system is wholly sufficient to spread it.

Which Noctua fan or CPU cooler should I buy? How to choose the right model?

Not sure which Noctua product to buy? Our detailed buying guides for fans and CPU coolers help you to choose the model that works best for you.

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