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The NH-L9i is a premium quality quiet CPU cooler for Intel LGA115x based HTPCs and Small Form Factor systems. At a super-low profile of only 37mm, the NH-L9i is ideal for extremely slim cases and due to its 95x95mm footprint, it provides full compatibility with tall RAM modules and VGA cards on mini-ITX mainboards. The custom designed SecuFirm2™ mounting system for LGA115x makes installation a child’s play and thanks to the highly optimised NF-A9x14 premium fan that supports fully automatic speed control via PWM, the NH-L9i runs remarkably quiet. Topped off with Noctua’s renowned NT-H1 thermal compound, the NH-L9i fuses everything users have come to expect from Noctua’s larger coolers into a super-compact package for slim HTPC systems.

  Caution:  The NH-L9i 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 65W TDP (Thermal Design Power). Please consult our TDP guidelines to find out whether the NH-L9i is recommended for your CPU.
Details
37mm low profile

37mm low profile

Due to the slim 23mm heatsink and the NF-A9x14 low profile fan that measures only 14mm in thickness, the NH-L9 stands a mere 37mm tall, which makes it ideal for use in compact HTPCs or Small Form Factor cases that offer minimum clearance for CPU coolers.
100% RAM compatibility

100% RAM compatibility

The NH-L9i 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, so it's fully compatible with tall memory modules.
100% compatibility with PCIe cards on mini-ITX

100% compatibility with PCIe cards on mini-ITX

Most Intel LGA115x based mini-ITX mainboards have the PCIe slot sitting right next to the 95x95mm socket zone. While larger coolers that exceed this zone are likely to block the PCIe slot, the 95x95xmm sized NH-L9i provides full compatibility with PCIe cards.
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-L9i 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 less than 65W TDP.
Custom-designed SecuFirm2™ mounting for LGA115x

Custom-designed SecuFirm2™ mounting for LGA115x

The NH-L9i bundles a custom-designed, backplate-less SecuFirm2™ mounting system for LGA115x that offers extended compatibility with mini-ITX boards and makes installation easier than ever, all while maintaining the trusted SecuFirm2™ quality.
NT-H1 thermal compound

NT-H1 thermal compound

Noctua's much-acclaimed NT-H1 is a pro-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 MTBF rating of more than 150.000 hours and the entire NH-L9i package comes with a full 6-year manufacturer's warranty.
NH-L9i
Cooler Specifications
LGA1150, LGA1151, LGA1155, LGA1156
Height (without fan)
23 mm
Width (without fan)
95 mm
Depth (without fan)
95 mm
Height (with fan)
37 mm
Width (with fan)
95 mm
Depth (with fan)
95 mm
Weight (without fan)
345 g
Weight (with fan/s)
420 g
Material
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Max. TDP
see TDP guide
Fan compatibility
92x92x14mm, 92x92x25mm
Scope of Delivery
  • NF-A9x14 PWM premium fan
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kit
  • Screws for 92x92x25mm fans
  • 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
MTBF
> 150.000 h
NH-L9i
NH-L9i & NH-L9a
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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18.05.2016 // AndroidPC.es
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NH-L9i Review

Después de probar los modelos Noctua NH-L9i y Noctua NH-L9a hemos podido comprobar otra vez como esta marca sigue en su línea de calidad, los acabados y materiales son excelentes. El rendimiento térmico está en la línea de lo exigido a un producto así que como es lógico no está diseñado para realizar OC del procesador. En cuanto al nivel de sonoridad como hemos podido comprobar casi son imperceptibles en un uso normal y molestan muy poco cuando se les exige algo más.
Test verdict: "Un modelo que se merece nuestro sello de producto recomendado ya que seguro que no defrauda a quien busque este tamaño de disipador para su caja." (Joaquin Prida Trujillo, AndroidPC.es)
19.04.2016 // Allround-PC.com
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NH-L9i Review

Noctua gibt für den NH-L9i eine TDP von 65 Watt an. Je nach Prozessor-Generation können jedoch auch Prozessoren mit einer höheren TDP gekühlt werden. Laut Noctua bietet der NH-L9i genügend Kühlleistung, um Intel Skylake-Prozessoren mit einer TDP von 95 Watt zu kühlen, was jedoch eine gute Gehäusebelüftung voraussetzt. Zudem sollte von Overclocking abgesehen werden, da die Temperaturwerte sonst zu stark ansteigen könnten. Wir haben den Kühler in Kombination mit dem Intel Core i7-6700K getestet. Dazu wurden alle Kerne des Prozessors mit dem Programm CPU Burn-in ausgelastet und der Temperaturverlauf aufgezeichnet und der Höchstwert ermittelt. [...] Dieser lag beim Noctua NH-L9i bei 74 Grad Celsius. Im Leerlauf wurde der Prozessor auf 32 °C heruntergekühlt. Die Geräuschentwicklung hält sich selbst unter Volllast in Grenzen und ist uns nicht unangenehm aufgefallen. Die TDP liegt beim NH-L9x65 bei 84 Watt, kann je nach Prozessor jedoch auch höher ausfallen. Laut Noctua sind Skylake-CPUs mit einer TDP von 95 Watt kein Problem, vorausgesetzt das Gehäuse ist ausreichend gut belüftet. Dementsprechend kam auch der NH-L9x65 mit unserem Core i7-6700K zurecht und erreicht etwas bessere Werte als sein kleiner Bruder, was angesichts der dickeren Bauhöhe sowie der zusätzlichen Heatpipes zu erwarten war. Im Idle sind es 28 Grad und unter Volllast werden maximal 65 °C erreicht. Da der Lüfter identisch ist, sind von der Lautstärke her nahezu keine Unterschiede auszumachen.
Test verdict: "Beide getesteten Low-Profile-Kühler sind sehr gut verarbeitet und lassen sich mit wenig Aufwand montieren. Die Kühlleistung ist gut, wobei der NH-L9x65 dank seiner zusätzlichen Heatpipes und dickeren Bauhöhe erwartungsgemäß etwas besser abschneidet. Bei leistungsstarken Prozessoren sollte jedoch auf eine ausreichende Gehäuselüftung geachtet werden. Zudem sollte von Übertaktungsversuchen abgesehen werden, da die Kühler sonst sehr schnell an ihr Limit kommen. Positiv hervorzuheben ist der angenehm leise Lautstärkepegel der Lüfter." (Niklas Ludwig, Allround-PC.com)
07.03.2016 // MinimalisticPC.com
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NH-L9i Review

After installation the Noctua NH-L9i feels very solid and steady. Since the size of the cooler is so small, it doesn’t interfere with any adjacent components, not even the RAM-modules. With its low height the Noctua NH-L9i would fit any tight case that has a restricted CPU-cooler height, even those that have the power supply attached on top of the CPU-cooler, such as many Lian-Li cases.
Test verdict: "Even though the price is somehow high for a cooler of its size, the performance to size ratio is exceptionally good and a excellent choice for a tiny CPU cooler with some horsepower and with the well-known quality feeling from Noctua." (Johan Nyman, MinimalisticPC.com)
21.06.2015 // GameIT.es
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NH-L9i Review

Tenemos en nuestras manos un gran disipador, a la altura de los productos que nos presenta Noctua, que nos permitirá controlar la temperatura del procesador aunque el equipo sea compacto. Además, gracias a su reducido tamaño, permitirá usar el slot PCIe situado bajo el procesador. Por todo esto y por los resultados obtenidos en los tests otorgamos el galardón de Oro de Game It al Noctua NH-L9i.
Test verdict: "Muy buenas a todos PCeros, estamos una vez más en Game It con un nuevo artículo, en este ocasión os traemos de la mano de Noctua uno de los componentes más importante en un ordenador y más en esta época de verano, un disipador. Gracias a Noctua tenemos la posibilidad de analizar el NH-L9i, un disipador de perfil bajo que promete una refrigeración óptima generando un ruido mínimo." (Miguel G. Mingorance, GameIT.es)
08.03.2015 // QWERTYmag.it
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NH-L9i Review

Quello che ci è veramente piaciuto del dissipatore è il bundle, non potete immaginare l’espressione che ci è comparsa in faccia quando per la prima volta abbiamo aperto la scatola in cui è riposto. Come al solito Noctua ha curato tutti i particolari per dare un impatto positivo fin dall’apertura dello scatolo. Per quanto riguarda le prestazioni invece riteniamo che siano adeguate alle sue dimensioni e come tali devono essere giudicate; 6 gradi in meno rispetto al dissipatore stock riteniamo che non siano affatto male.
Test verdict: "Dissipatore molto piccolo ma in grado di soddisfare le esigenze di chi cerca una buona resa e poco ingombro. Noctua con l'NH-L9i ha creato un piccolo prodotto con i muscoli ideale per piccoli sistemi in grado di garantire buone performance nell'utilizzo quotidiano e nelle sessioni di gioco." (Davide Torno, QWERTYmag.it)
04.01.2015 // TechTesters
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NH-L9i Review

Zoals je ziet is de installatie zeer eenvoudig te noemen en heb je voor een paar centen een hele leuke koeler, maar ben ik nu puur gegaan voor de looks of de prestaties, nou ik kies toch meer voor de prestaties van de koeler, het mooie was dat deze koeler een low profile is en je het gemakkelijk kon installeren. Ik wou toch iets anders dan een standaard stock koeler die soms een herrie maakt als hij moet presteren, deze koeler doet dat ook wel als hij het te warm krijgt, maar het geluid bij een full load is zeer aangenaam en heb je er niet veel last van, bij de stock koelers is dit vaak wel anders.
Test verdict: "Ga je voor eenvoud en de looks en je wilt ook nog eens een leuke prestatie bij het koelen van je CPU, dan zou ik zeker gaan voor de Noctua, je bent dan wel iets meer kwijt dan een vergelijkbare koeler, maar door zijn prestaties en eenvoud is dat meer dan waard." (Stephan Overbeeke, TechTesters)
25.10.2014 // Conseil Config
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NH-L9i Review

La qualité de fabrication est comme d'habitude chez Noctua irréprochable, le bundle fournit tout ce qu'il faut pour monter le ventirad sans problèmes et le montage se fait très rapidement (4 vis et hop c'est monté). Au niveau des performances ils sont capables de refroidir un processeur de 95 Watts, il faudra cependant privilégier un processeur de type Core i3 ou Pentium G pour garder un silence appréciable.
Test verdict: "[L]es Noctua NH-l9x seront d'excellents choix de ventirads lors du montage d'une configuration mini-ITX de très petite taille." (Christian Marchini, Conseil Config)
10.08.2014 // HWready.it
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NH-L9i Review

Il modello L9i è davvero molto un prodotto interessante per quanto piccolo fa il suo dovere. I due fratelli maggiori NH-C14 – NH-L12 sono davvero potenti, il modello C14 è un pochino ingombrante, prima di acquistare accertarsi sempre dell’eventuale compatibilità con le RAM, non ci si deve dimenticare che monta 2 ventole da 140mm e questa sua caratterista lo rende anche paurosamente efficiente.
Test verdict: "Solito standard qualitativo di Noctua, l’azienda Autriaca non delude mai. Silenziosi, performanti e di alta qualità, per non parlare dei Bundle sempre completi." (Santoro Luigi, HWready.it)
20.06.2014 // HalTechTV.com
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NH-L9i Review

From the graphs it looks as though the L9i is falling behind and is maybe not a very good cooler. I must point out however that this is an exceptionally small cooler specifically designed for small systems and <65W TDP Processors. We are running it on an 84W Haswell processor with Prime95 running. I am thoroughly impressed with this as I had around 15-20°C to work with before needing to worry, If possible the processor could have probably still been overclocked and been safe though that's not me recommending it.
Test verdict: "If you plan on running your processor stock and want something small, the L9i might be one of the best coolers to choose from. It's compact design coupled with the A9x14 both help strengthen and secure your motherboard and also give it that small but powerful aesthetic feel." (Hal Thompson, HalTechTV)
16.06.2014 // WebAdictos.com
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NH-L9i Review

Noctua tomó lo que mejor sabe hacer y lo puso en el NH-L9i. Por lo que a pesar de su diminuto tamaño, el NH-L9i cuenta con todas las características que hacen grande a los productos de esta marca. Desde su rendimiento silencioso, su gran calidad de construcción y hasta la facilidad de instalación, este disipador lo tiene todo. Sin embargo, es importante señalar que este disipador no es para el entusiasta de overclocking. Sino que está destinado a aquellos que están construyendo su computadora con un factor de forma pequeño donde el espacio es muy limitado. El NH-L9i encaja perfectamente en estos casos.
Test verdict: "Si buscas un disipador por aire que te brinde mayor rendimiento que el disipador stock de Intel con un menor nivel de ruido, no encontrarás nada mejor que el Noctua NH-L9i." (Zhiye Liu, WebAdictos.com)

Installation Manual (PDF)

Information Sheet (PDF)

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.

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.

The mounting brackets don’t touch the mainboard, is this an issue?

No. The mounting brackets are not meant to touch the mainboard and the flexibility of the brackets is required to create the appropriate contact pressure. There should be up to 3mm (Intel) or 4mm (AMD) space between the mainboard and the mounting brackets when the cooler is correctly installed.

nh-l9 mounting bar spacing

Is the NH-L9i compatible with the Gigabyte GA-H77N-WIFI and GA-Z77N-WIFI?

Yes, after a slight revision, the NH-L9i is now fully compatible with these mainboards.

Which Noctua coolers are compatible with LGA1150?

The mounting is identical on all LGA115x sockets (LGA1150, LGA1155, LGA1156). The following coolers are thus compatible with LGA1150 out of the box and don’t require any upgrades in order to be used on this platform: NH-C12P SE14, NH-C14, NH-D15, NH-D14, NH-L12, NH-L9i, NH-U14S, NH-U12S, NH-U12P SE2, NH-U9B SE2. In addition, all older models which have been upgraded with the NM-I3 kit can also be used on LGA1150 without any further upgrades.

The following coolers can be made compatible to LGA1150 using the NM-i115x Upgrade-Kit and are eligible for Noctua’s free mounting kit offer: NH-C12P, NH-U12, NH-U12F, NH-U12P, NH-U12P SE1366, NH-U9, NH-U9F, NH-U9B.

The following coolers can be made compatible to LGA1150 using the NM-i115x Upgrade-Kit but are not eligible for Noctua’s free mounting kit offer: DX-Series Xeon coolers, NH-D14 SE2011.

The following coolers are mechanically incompatible with the NM-i115x Upgrade-Kit and can not be made compatible with LGA1150: DO-Series AMD Opteron coolers, NH-L9a.

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.

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 Dell, HP or Lenovo?

Systems from Dell, HP or Lenovo often use motherboards which differ slightly from the specifications issued by Intel and AMD. While those changes are usually subtle, they can led 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 can often not be resolved.

Due to the large number of possible issues with systems from Dell, HP and Lenovo, which can't be resolved with different mounting parts alone, Noctua does not officially support such machines.

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 -K series CPUs can dissipate more heat than indicated by the TDP specification if a) the TDP limits are extended or disabled in the motherboards' BIOS or b) the motherboard applies some overclocking by default, e.g. by raising the supply voltage of the CPU and using higher Turbo-Mode multipliers. This can lead to temperature issues.

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 and notice a higher than specified power draw, please limit the TDP to the specified value by choosing appropriate BIOS settings. In doubt please contact your motherboard vendor for details on how to do this.

All our TDP recommendations are based on thorough testing with the default values specified by Intel.

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.

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.

Are there any concerns using Noctua CPU coolers on Intel Skylake (LGA1151) CPUs?

Our SecuFirm2™ mounting systems undergo comprehensive compatibility tests before being approved for new platforms. We have neither detected any problem with regard to the Intel LGA1151 platform (“Skylake”) during these tests nor have we received any reports from our customers, sales partners and system integrators that would indicate any possible issue. Our SecuFirm2™ mounting systems (with the exception of some compact L-type models) rely on coil springs to create the required contact pressure, which gives a certain flexibility both with regards to tolerances in stackup height and shocks or other forces. Compared to spring-less mounting systems, which exclusively rely on the bending of the mounting brackets in order to create contact pressure, this allows to reduce the mechanical stress on CPU, socket and motherboard and thus helps to prevent possible damage from excessive forces. However, as it is not possible to reliably calculate or control the forces that act upon a system during transport (e.g. in shipping), we generally recommend, due to safety reasons, to take off coolers with a total weight of more than 700g (incl. fan).

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.

Do you have a question concerning one of our products? Please use this form to pose a question!