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The NH-L9x65 is a taller, performance-enhanced version of Noctua’s award-winning NH-L9 low-profile coolers. With 65 instead of 37mm height and four instead of two heatpipes, the NH-L9x65 is more powerful than its smaller siblings yet retains their 95x95mm footprint, which guarantees 100% RAM and PCIe compatibility on Intel based ITX mainboards and makes the cooler more convenient to work with as it doesn’t overhang near-socket connectors. Thanks to the highly optimised NF-A9x14 premium fan that supports fully automatic speed control via PWM, the NH-L9x65 runs remarkably quiet. Topped off with the professional SecuFirm2™ multi-socket mounting system for Intel and AMD, Noctua’s renowned NT-H1 thermal compound and 6 years manufacturer’s warranty, the NH-L9x65 fuses everything users have come to expect from Noctua’s larger coolers into a compact premium package for space restricted systems.

Caution: The NH-L9x65 is a highly-compact low-profile quiet cooler designed for use in small form factor cases and HTPC environments. While it provides first rate performance in its class, it is not suitable for overclocking and should be used with care on CPUs with more than 84W TDP (Thermal Design Power). Please consult our TDP guidelines to find out whether the NH-L9x65 is recommended for your CPU.

Details
65mm low profile

65mm low profile

Due to its compact heatsink and the 14mm thin NF-A9x14 low profile fan, the NH-L9x65 stands only 65mm tall (the same height as low-profile expansion cards), which makes it ideal for use in compact HTPCs or Small Form Factor cases that offer limited clearance for CPU coolers.
100% RAM compatibility on Intel platforms

100% RAM compatibility on Intel platforms

The NH-L9x65 has a 95x95mm footprint that complies exactly to the Intel LGA115x socket keep-out zone. This means that it won't cause issues with chipset coolers and doesn't overhang the RAM slots, making it fully compatible with tall memory modules.
100% compatibility with PCIe cards on ITX

100% compatibility with PCIe cards on ITX

Many Intel LGA115x based mini-ITX mainboards have the PCIe slot sitting close to the 95x95mm socket zone. While larger coolers that exceed this zone may block the PCIe slot, the 95x95xmm sized NH-L9x65 provides full compatibility with PCIe cards.
Easy access to near-socket connectors

Easy access to near-socket connectors

Many low-profile coolers use larger fans or heatsinks in order to achieve sufficient cooling performance, but protruding over the socket zone, they make it difficult or even impossible to reach near-socket connectors on tightly packed ITX mainboards. Thanks to its 95x95mm footprint, the NH-L9x65 provides easy access to all connectors and components.
NF-A9x14 PWM premium fan

NF-A9x14 PWM premium fan

The highly optimised NF-A9x14 premium fan features Noctua's proprietary AAO frame as well as sophisticated aerodynamic design measures. Supporting PWM for fully automatic speed control, the NF-A9x14 allows the NH-L9x65 to stay remarkably quiet.
Low-Noise Adaptor

Low-Noise Adaptor

Allowing to reduce the maximum speed of the NF-A9x14 fan from 2500 to 1800rpm, the included (L.N.A.) makes it possible to achieve near-silent setups using CPUs with up to 65W TDP.
SecuFirm2™ mounting system

SecuFirm2™ mounting system

Noctua's SecuFirm2™ mounting systems have become synonymous with quality, safety and ease of use. Supporting Intel LGA115x (LGA1150, LGA1151, LGA1155, LGA1156), LGA2011, LGA2066 and AMD (AM3(+), AM2(+), FM1, FM2(+)), the SecuFirm2™ mounting included with the NH-L9x65 guarantees perfect contact pressure and maximum convenience on all current sockets.
Compatibility with past and future sockets

Compatibility with past and future sockets

Complying with the open SecuFirm™ standard, the NH-L9x65 can be made compatible with the older LGA1366 and LGA775 sockets using the optional NM-I3 mounting kit, which is provided by Noctua free of charge. If technically possible, Noctua will also provide upgrade kits for future sockets.
NT-H1 thermal compound

NT-H1 thermal compound

Having received more than 100 awards and recommendations from hardware journalists around the world, Noctua's NT-H1 is a proven professional grade TIM solution that provides minimum thermal resistance, excellent ease of use and outstanding reliability.
6-year manufacturer’s warranty

6-year manufacturer’s warranty

Noctua products are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the supplied NF-A9x14 features an MTTF rating of more than 150.000 hours and the entire NH-L9x65 package comes with a full 6-year manufacturer’s warranty.
NH-L9x65
Cooler Specification
Intel LGA2066, LGA2011-0 & LGA2011-3 (Square ILM), LGA1156, LGA1155, LGA1151, LGA1150 & AMD AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+ (backplate required), AM4 with NM-AM4
Height (without fan)
51 mm
Width (without fan)
95 mm
Depth (without fan)
95 mm
Height (with fan)
65 mm
Width (with fan)
95 mm
Depth (with fan)
95 mm
Weight (without fan)
340 g
Weight (with fan/s)
413 g
Material
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Max. TDP
see TDP guide
Fan compatibility
92x92x14, 92x92x25
Scope of Delivery
  • NF-A9x14 PWM premium fan
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kit
  • Noctua Metal Case-Badge
Warranty
6 Years
FAN Specification
Model
Noctua NF-A9x14 PWM
Bearing
Max. Rotational Speed (+/- 10%)
2500 RPM
Max. Rotational Speed with L.N.A. (+/- 10%)
1800 RPM
Min. Rotational Speed (PWM, +/-20%)
600 RPM
Max. Acoustical Noise
23,6 dB(A)
Max. Acoustical Noise with L.N.A.
14,8 dB(A)
Input Power
2,52 W
Voltage Range
12 V
MTTF
> 150.000 h
NH-L9x65
NH-L9x65 Video
SecuFirm2™ AMD installation (NM-AMB1)
SecuFirm2™ Intel LGA2011 installation
SecuFirm2™ Intel LGA115x installation
Video Reviews
The following video reviews have not been created by Noctua. Responsibility for the information and views expressed in the videos lies entirely with the authors.
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14.08.2015 // TweakTown.com
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NH-L9x65 Review

While our overclocked testing does take this cooler past its "safe zone", we are very pleased to see it was able to tame near 100W of power and still leave us free of throttling the CPU. In the stock testing, which is where this cooler is in its sweet spot, the results were much better than what the stock cooler would afford, and again, in roughly the same footprint. We really like the move to SecuFirm2 mounting hardware. We also like that everything on the motherboard is fully accessible, and when it comes to cases with tight confines designed into them, a cooler like this will keep you from having to gut the entire rig to remove a stick of RAM or get to a SATA connector. Everything Noctua boasted about with this cooler is true, and while we feel they underestimated the power that the NH-L9x65 can actually handle in the right conditions, the 84W TDP rating is fair and safe in near all conditions.
Test verdict: "Noctua revives what a compact cooler can be! The NH-L9x65 can tame our beast, comes with rock solid mounting hardware, and comes in at a fairly good price." (Chad Sebring, TweakTown.com)
24.04.2016 // eTeknix.com
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NH-L9x65 Review

The SecuFirm II mounting system is worthy of much credit too and it’s been a long time favourite of mine and can be seen on many of the latest Noctua coolers. It’s incredibly easy to install, remove and maintain. The fact that Noctua also includes their high-end thermal paste, as well as a custom screwdriver to help with the install/re-install process only makes things even easier and it’s going to be a big benefit for those who plan to install these coolers in multiple systems. The overall build quality is very robust, and the design is pretty neat too. Sure, not everyone is a fan of the Noctua colour scheme, but I certainly do. The fan is one of the best small fans we’ve ever seen or heard, it’s amazingly quiet even at high RPM, despite its compact size and that’s something for Noctua to be proud of.
Test verdict: "There’s a lot to love about this cooler, and while I admit that it’s certainly not suitable for everyone’s needs, there’s a big market for very small coolers and the NH-L9x65 is one of the best in its class by a rather large margin. Capable of cooling a powerful CPU including the high-end Intel 2011 range in such a small form factor makes it an ideal choice for workstation and server deployment, or a mid-to-high end CPU with a modest overclock." (Peter Donnell, eTeknix.com)
02.04.2016 // LanOC.org
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NH-L9x65 Review

So where does the Noctua NH-L9x65 land when it’s all said and done? Well just like its smaller brother, I love its small form factor. With Noctua introducing different cooling options that can handle even the higher end CPUs it has really opened up the options when it comes to our LANrig builds like our Lunchbox project builds. In fact, I’ve used the NH-L9i in 4 or 5 of our builds ranging from our LANrigs, to SFF routers. The NH-L9x65 just opens up even more options for AMD CPUs that have higher TDPs than the L9a can handle as well as the 6700K that caused the need for the L9x65 in our upcoming build. The move back to a universal mount does help with those options and it means if you want to switch to or from AMD or Intel you have the option. Like all Noctua coolers the NH-L9x65 is quiet and its cooling performance was spot on as well. It might not have matched the larger tower heatsink on our open air test bench, but it did get a lot closer than I thought possible in an enclosed ITX case.
Test verdict: "[T]he Noctua NH-L9x65 is a great option for anyone building a small form factor PC who needs the higher TDP when compared to the NH-L9a/I or if you just want a little room for overclocking. I don’t think you are going to find a better option in the form factor." (Wes Compton, LanOC.org)
23.10.2015 // PureOverclock.com
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NH-L9x65 Review

The L9x65 may not have the highest thermal rating, but especially for those smaller 65W CPUs that work great in HTPCs, this cooler won’t have any issues. I believe you’d be hard pressed to find a better unit than this in this same category.
Test verdict: "The NH-L9x65 is a great little cooler for the purpose in which it was designed. It has a very low profile, decent cooling, and silent operation. As always, Noctua comes through in every area when it comes to quality. From the packaging, to the accessories, even to the cooler itself, everything about a Noctua unit says they are delivering a top notch product." (Josh Jackson, PureOverclock.com)
26.06.2015 // pcGameware.co.uk
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NH-L9x65 Review

Obviously due to its size the NH-L9x65’s performance is lackluster if you were to try and compare to other air based CPU Coolers. But that would be like trying to compare the top speed of a Bugatti Veyron to that of a Smart Car! So let’s look at it’s nearest rival (that we have tested), the Silverstone Argon AR06. Simply put the performance of the Noctua NH-L9x65 put the Argon AR06 in the shade, being approximately 18 degrees cooler when looking at both the stock and overclocked results. It also does this while staying pretty quiet with a maximum recorded dBA of 40 with the 90mm fan at 100%, this drops even lower to around 37dBA with the fan switched to PWM control.
Test verdict: "The bottom line here is that we have a cooler designed to go where no other cooler is likely to fit, it’s beautifully made and extremely easy to install. The Noctua NH-L9x65 also performs well enough for modern day use and Gaming, even with an overclock!" (Mike Whatley, pcGameware.co.uk)
05.06.2015 // FunkyKit.com
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NH-L9x65 Review

In conclusion, The Noctua NH-L9x65 is a small compact cooler and with most cooler of this stature their may be some limitations in the cooling capabilities. If what you need a decent up grade over stock and want a top tier company to set up shop in your case take a look at the Noctua NH-L9x65. The quality and durability of Noctua's products will not disappoint. Every Noctua I have reviewed have all been extremely easy to install. I like that a cooler does not fight back when you go to install and do not want to have to disassemble your entire rig. If you have access to the backplate in your case then installing the NH-L9x65 will be a breeze.
Test verdict: "The Noctua NH-L9x65 may have some cooling limitations in extreme overclocking conditions but if you have limited space and are in need of a cooler that can handle the stock load, look no further because the Noctua NH-L9x65 will meet those demands!" (Chris McCart, FunkyKit.com)
05.05.2015 // Noticias3D.com
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NH-L9x65 Review

Noctua no podía defraudarnos. Sigue estando en lo más alto del rendimiento, aunque estemos hablando de un mero disipador de perfil bajo que podría pasar desapercibido en cualquier entorno de HTPC. El NH-L9x65 puede estar orientado a entornos de escaso espacio y parecer que su ventilador activo de 92 milímetros no puede hacer mucho, pero se las ha visto de tú a tú con un disipador de tamaño estándar y ha equilibrado las fuerzas, lo que es todo un mérito. No le pidamos rendimiento si hablamos de overclock, pero tampoco se lo vamos a exigir, ya que ése no es su campo.
Test verdict: "Volvemos a tener una solución más que buena para nuestro ordenador de pequeño tamaño, PC de bajo consumo, HTPC o similar, y si viene de parte de Noctua, conocida por su buen hacer y eficiencia, pues más que una solución se trata de una recomendación. Excelente sistema de montaje, piezas de calidad, buen rendimiento para tratarse de un disipador de perfil bajo, compatibilidad con todos los sockets actuales, deja espacio para operar y para módulos de RAM altos, y todo ello por un precio aproximado de 45 euros, algo más caro que un disipador de perfil bajo convencional, pero ya sabemos que los precios de Noctua suelen despuntar un poco respecto a otras marcas." (Iván Aparicio, Noticias3D.com)
30.04.2015 // NextHardware.com
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NH-L9x65 Review

Arrivati a questo punto non abbiamo più parole da spendere per Noctua. La dedizione e la conseguente ricerca della perfezione da parte questa storica azienda è palese in ogni minimo particolare dei propri prodotti, a partire da un bundle impeccabile ormai standardizzato in tutti le nuove creazioni, caratterizzato da un ordine quasi maniacale del confezionamento ed una dotazione di tutto rispetto e, soprattutto, di qualità. Nulla da dire nemmeno riguardo il kit di installazione SecuFirm2 che, oltre ad essere universale e quindi compatibile con tutti i socket attualmente in commercio, è uno dei migliori e rapidi sistemi di montaggio sul mercato.
Test verdict: "Come al solito le prestazioni sono convincenti, considerato che il dissipatore in questione è di tipo top flow (a sviluppo orizzontale) ed è stato creato appositamente per sistemi estremamente compatti." (Alfonso Basilicata, NextHardware.com)
18.04.2015 // modding.fr
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NH-L9x65 Review

On peut trouver des ventirads Top Flow plus efficace en terme de refroidissement, mais ils sont loin des 65 mm de hauteur que propose le NH-L9x65. Ce n’est pas seulement cette dimension qui rend ce ventirad attractif pour la mise en place d’une config au sein d’un petit boitier, ce sont aussi les 95 mm de coté qui font que le radiateur n’occupe que peu de place au niveau d’une carte mère mini ITX. Cela dégage ainsi de l’espace pour accéder aux différentes prises implantées sur le PCB. La compatibilité avec les barrettes mémoires s’en trouve aussi améliorée. Nous retrouvons la qualité Noctua avec une bonne finition et toujours cette simplicité de montage. Il est extrêmement dur de faire plus simple pour de ce qui est de la mise en place du ventirad sur la carte mère! la backplate est toute prête et on n’a pas besoin de batailler quant au serrage du radiateur sur le cpu. De plus Noctua fournit le tournevis et même une seringue de sa propre pâte thermique NT-H1. Un bundle toujours aussi complet! Le tout est accompagné d’une garantie de 6 ans. Malgré sa petite taille et sa vitesse de rotation, le ventilateur reste discret. Les différentes technologies d’amélioration du flux d’air tout en diminuant le niveau sonore sont efficaces.
Test verdict: "Le NH-L9x65 est un ventirad « taillé » pour les mini boîtiers, les HTPC et toute sorte de boitier où la place est comptée." (Bertrand Curras, modding.fr)
17.04.2015 // CoolingTechnique.com
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NH-L9x65 Review

Il dissipatore in questione non si vuole porre infatti come una soluzione pensata per le prestazioni, ma si presenta al grande pubblico come il cugino di primo grado dell'NH-L9 di cui pur mantenendone gli ingombri laterali ne aumenta il volume in altezza, migliorando in maniera sensibile le prestazioni grazie alla superficie dissipante che cresce in maniera esponenziale rispetto alla precedente versione. Si tratta quindi di una sorta di ibrido a metà strada tra i low profile puri e i torre sotto i 130mm di altezza; una categoria sostanzialmente nuova di cui Noctua si carica le spalle e fa da pioniera. A questo si aggiunge l'ampia compatibilità con i moduli ram e sistemi di raffreddamento ad alto profilo delle schede madri, condendo il tutto con la solita qualità del gufo austriaco che non si fa mancare nemmeno in questa occasione l'eccellente sistema di ritenzione Secufirm II, con backplate e controdadi di ritenzione, assieme alle saldature in lega sul pacco alettato e cura per i dettagli assolutamente di fascia alta. Il risultato ne è un dissipatore bilanciato per l'utilizzo a cui è rivolto grazie anche alla ventola fornita di serie che sebbene risulti chiaramente presente a +12v, risulta tutto sommato sopportabile anche in ambienti tranquilli quando si trova a tensioni intermedie di daily use.
Test verdict: "Tirare delle conclusioni su questo genere di proposte non è mai semplice, se però si analizzano le premesse con il quale l'NH-L9x65 viene venduto possiamo sicuramente direi che il bersaglio è stato nuovamente centrato da parte di Noctua." (Damiano Villa, CoolingTechnique.com)

Installation Manual (PDF)

Information Sheet (PDF)

FAQs

Why doesn't the base of Noctua coolers have a polished, mirror like finish?

How can I check whether my case is wide/high enough for the cooler?

I can't open the socket due to the mounting bars!

Can the cooler be installed turned by 90° on AMD sockets?

Does the package include a backplate for AMD AM2(+)/AM3(+)/FM1/FM2(+)?

How can I check whether my AMD mainboard has a standard AMD backplate that’s compatible with the SecuFirm2™ mounting system and how should I proceed with the installation?

How to remove the base protection cover?

I get a CPU fan error using my Noctua PWM fan, is it faulty?

Does the mounting-system support LGA2011 based Xeon CPUs?

How should I clean my Noctua cooler?

Why is the cooler’s contact surface slightly convex?

Is the cooler compatible with LGA775 and LGA1366?

I’ve used all the NT-H1 thermal compound that came with the cooler, can you send me more?

Which sockets are supported or can be supported using upgrade kits?

Is the cooler compatible with the LGA2011-3 socket?

Is it a problem that the CPU heatspreader is not covered completely by the heatsinkbase on LGA2011-3?

My Noctua PWM fan starts to spin when the PC boots but then stops, what is wrong?

My Noctua PWM fan runs at a much higher minimum speed than advertised, what is wrong?

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

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

I'm experiencing fan speed issues with my motherboard from Supermicro, what can I do?

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

Is the cooler compatible with the LGA1151 socket?

Why doesn't the supplied backplate fit my LGA2011 motherboard?

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

I have difficulties installing the cooler, can you help?

Should I take the cooler off before transporting my system?

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

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

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

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

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

Which Noctua CPU coolers are compatible with Intel LGA2066?

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

Why doesn't the base of Noctua coolers have a polished, mirror like finish?

As most of today's PC enthusiasts use high-viscosity thermal compounds, the contact surface of Noctua coolers is optimised for use with this type of pastes. The micro-grooves at the contact surface ensure that high-viscosity thermal compounds are dispersed to a uniform thin layer across the whole contact area and that no air pockets remain between the cooler and the CPU. With a polished, mirror like surface, the risk of uneven dispersion is much higher. As too thick layers of thermal paste and air pockets drastically deteriorate heat transmission, the micro-grooves are is of vital importance to the overall cooling performance of Noctua coolers when used with today's high-viscosity thermal pastes.

How can I check whether my case is wide/high enough for the cooler?

Most case manufacturers provide specifications for maximum CPU cooler height/clearance. Please refer to these specifications in order to verify that the cooler will fit the case. If no specifications are available, please contact the case manufactuer or measure the distance from the motherboard tray to the side panel (tower cases) or top panel (desktop cases). If this distance is bigger than the height of the cooler + 15mm (mainboard spacers + mainboard + CPU), the height/width of your case should be sufficient.

I can't open the socket due to the mounting bars!

Please first loosen one of the two thumbscrews that hold the mounting bars in place. Then untighten the second screw so that you can swivel the mounting bar and open the socket. Depending on the position of the mounting bars, you may need to swivel both.

Open Socket

Open Socket

Can the cooler be installed turned by 90° on AMD sockets?

No. The new SecuFirm2™ mounting system for AM2, AM2+ and AM3 uses the same standardised hole spacing as the Intel system and thus allows for a much easier installation, but the cooler cannot be installed turned by 90°.

Does the package include a backplate for AMD AM2(+)/AM3(+)/FM1/FM2(+)?

No. As most AMD mainboards come with a stock backplate preinstalled, the cooler doesn’t include an AMD backplate. If your mainboard doesn’t have a backplate, please contact our support team at support@noctua.at.

amd backplate

How can I check whether my AMD mainboard has a standard AMD backplate that’s compatible with the SecuFirm2™ mounting system and how should I proceed with the installation?

The SecuFirm2™ mounting system requires a standard AMD backplate (either plastic or metal) with screw threads as shown on the pictures below. These backplates are pre-installed on the rear side of most AMD mainboards (see first picture below) and fixed to the retention module with four screws (see second picture below). If your retention module is fixed with plastic bolts instead of metal screws, please contact support@noctua.at in order to obtain an appropriate backplate.

In order to proceed with the installation of your Noctua cooler, please remove the four screws and the retention module but keep the backplate in place so that you can see the screw threads from the top side of the motherboard (see third picture below). You can then proceed with the installation of the SecuFirm2™ mounting kit as described in the manual (see fourth picture below).

AMD backplate

AMD backplate

AMD backplate

AMD backplate



How to remove the base protection cover?

Noctua CPU coolers are shipped with a plastic protection cover at the bottom side of the cooler, which protects the contact surface against scratches and other damage.

The base of Noctua CPU coolers is made from hard-wearing nickel plated copper, so there's nothing to worry about if you buy a Noctua cooler from second hand or if your cooler didn't come with a protection cover. Please proceed with the installation as explained in the manual.

You can simply remove the cover as shown below:

Base Protection Cover

I get a CPU fan error using my Noctua PWM fan, is it faulty?

Noctua PWM fans feature a minimum speed of 300rpm to allow for ultra quiet operation when your CPU is at idle state and doesn’t require higher cooling performance. Some mainboards display error messages such as “CPU fan error” during the booting process when the fan speed is below a certain level. If you get such error messages using your Noctua PWM fan and if such options are available in your BIOS, please either adjust the minimum fan speed monitoring limit to 200rpm or increase the minimum PWM duty cycle. If your BIOS doesn’t offer these options, please disable CPU fan errors. For detailed information on BIOS fan settings, please consult your mainoard’s manual or contact your mainboard manufacturer.

Does the mounting-system support LGA2011 based Xeon CPUs?

There are two different types of ILM (Independent Loading Mechanism) for Intel’s LGA2011 based Xeon CPUs: Square ILM with 80x80mm hole spacing and Narrow ILM with 56x94mm hole spacing. The Square ILM socket is mechanically identical to the LGA2011 socket for Core i7, so the mounting-system is fully compatible, but it is not compatible with Xeon mainboards that use the Narrow ILM:

Xeon Compatibility

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.

Why is the cooler’s contact surface slightly convex?

As the Integrated Heat Spreaders (IHS) of today’s CPUs are slightly concave, the cooler’s contact surface has been deliberately designed to be slightly convex in order to ensure optimal contact. This way, more contact pressure will be applied at the centre of the IHS directly above the DIE, which results in better heat transfer and improved overall performance.

Is the cooler compatible with LGA775 and LGA1366?

The cooler does not support LGA775 and LGA1366 out of the box, but can be made compatible using the NM-I3 mounting kit. Noctua provides the NM-I3 kit free of charge if a proof of purchase (scan, photo or electronic copy of the invoice) of the cooler and an LGA775 or LGA1366 motherboard or CPU are presented. In order to install the cooler using the NM-I3 kit, please first unscrew the center screw of the original one-piece fastening bracket (you can reach through the fin stack using the long screw driver supplied with the cooler) and remove it. Then install the two fastening brackets of the NM-I3 kit as described in the NM-I3 installation manual.

I’ve used all the NT-H1 thermal compound that came with the cooler, can you send me more?

Please kindly note that the NT-H1 thermal compound supplied with our coolers is a consumable item so our manufacturer’s warranty does not include providing additional thermal compound. You can purchase NT-H1 from our resellers.

Which sockets are supported or can be supported using upgrade kits?

Please refer to our socket compatibility chart.

Is the cooler compatible with the LGA2011-3 socket?

Yes. Due to the heatsink mounting mechanism being identical on LGA2011-0 and 2011-3, the cooler supports both types of LGA2011-3.

Is it a problem that the CPU heatspreader is not covered completely by the heatsinkbase on LGA2011-3?

No. Depending on the orientation of the cooler, 1-2mm at the outer edge of the heatspreader may not be covered by the heatsink base. As the heat is concentrated at the center of the CPU and the outermost parts are irrelevant for heat-transfer, this is no problem at all.

My Noctua PWM fan starts to spin when the PC boots but then stops, what is wrong?

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). In this case, it may occur that the mainboard reduces the voltage so much that the fan stops. 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.



To resolve the issue, you can:

  1. Choose a higher fan speed profile in the BIOS (e.g. „normal“ instead of „silent“, etc.) or deactivate automatic fan speed control and use a Low-Noise Adaptor instead.

  2. Use the mainboard‘s fan speed control software or 3rd party tools like Speedfan to regulate the fan speed. Unlike BIOS based fan speed control, the supplied software usually checks whether the fan has stopped and increases voltage accordingly or at least offer more options to set up the fan properly.

  3. 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.

My Noctua PWM fan runs at a much higher minimum speed than advertised, what is wrong?

The specified minimum speed refers to the speed at 20% PWM duty cycle. There can be several reasons why the fan doesn‘t go as low as indicated:

  1. Many mainboards do not go below 40%, 50% or even 60% PWM duty cycle on case fan headers. Please refer to your mainboard manual to verify whether the fan header actually goes down to 20% duty cycle. If that's not the case, in some cases you can use the fan speed control software supplied with your mainboard to overcome these limitations and reduce the fan speed even further. However, 3rd party tools like SpeedFan offer greater flexibility and better options to work around the limitations imposed by the mainboard vendors.

  2. 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.

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.

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 where 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.

I'm experiencing fan speed issues with my motherboard from Supermicro, what can I do?

The BIOS of many motherboard models from Supermicro expects a certain minimum fan speed (usually 700rpm), which is higher than the minimum fan speed that can be achieved with Noctua's PWM fan models. The BIOS may interpret the low minimum RPM of Noctua fans as a fan error and thus try to run the fan at 100% for a short period before going back to automatic control.. This can result in oscillating fan speeds and fan speed warnings in the BIOS or the fan management console.

Unfortunately there is usually no option to set a lower minimum value that would suit the low minimum speed of Noctua PWM fans.The issue can thus only be resolved by either disabling automatic fan speed control in BIOS, which will cause the fans to run at a constant speed, or by requesting a modified BIOS file from Supermicro, which takes the minimum fan speed of Noctua fans into account (charges might apply).

My Intel -K series 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.

Is the cooler compatible with the LGA1151 socket?

Yes. Due to the heatsink mounting mechanism being identical on LGA1150, LGA1151, LGA1155 and LGA1156, the cooler also supports LGA1151.

Why doesn't the supplied backplate fit my LGA2011 motherboard?

The supplied backplate is for LGA115x only and there is no backplate required for installation on LGA2011. Please refer to the installation manual for how to install the heatsink on LGA2011.

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.

Should I take the cooler off before transporting my system?

Due to the low weight of the cooler, it is not necessary to take it off for transport.

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.

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

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.

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.

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.

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-L9x65 SE-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-U12DO A3
NH-U9 DO A3

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