heading

The NH-D15 chromax.black is an all-black version of Noctua’s award-winning flagship model NH-D15 premium-quality quiet CPU cooler. Thanks to the same proven dual-tower heatsink design and NF-A15 PWM fans, it stays true to the NH-D15’s successful formula of rivalling the performance of all-in-one water coolers while maintaining superb quietness of operation. At the same time, the chromax.black version with its black fans and black coated heatsink combines these assets with a sleek stealth look. Topped off with the renowned SecuFirm2™ multi-socket mounting system, Noctua’s enthusiast-grade NT-H1 thermal compound and a full 6-year manufacturer’s warranty, the NH-D15 chromax.black is a deluxe choice for both overclockers and silent enthusiasts who seek an elite-class heatsink that looks just as great as it cools.
Details
Award-winning NH-D15 cooler

Award-winning NH-D15 cooler

Tens of thousands of enthusiast users all over the world swear by the NH-D15’s quality and performance. Recommended by more than 200 international hardware websites and magazines, it is renowned for being one of the best high-end coolers on the market.
chromax.black design

chromax.black design

The NH-D15 chromax.black is black from head to toe: Featuring a black coated heatsink, black fans with black anti-vibration-pads, black fan clips and black mounting parts, it’s right at home in all-black builds and easy to integrate with other colour schemes.
Colour-customisable

Colour-customisable

Using the optional NA-HC3 and NA-HC4 heatsink covers as well as the NA-SAVP3 anti-vibration pads (available in black, blue, green, red, yellow, white), the NH-D15 chromax.black can be fully customised to fit popular build colour schemes such as black and red or black and white.
6 heatpipe dual tower design

6 heatpipe dual tower design

As compared to conventional single tower heatinks, the NH-D15's fine-tuned six heatpipe dual tower design provides more surface area, better heat-distribution and superior airflow efficiency in dual fan mode.
Widened fin stack and expanded heatpipe layout

Widened fin stack and expanded heatpipe layout

Compared to the NH-D14, the NH-D15's fin-stack has been widened from 140 to 150mm and its heatpipes are now spaced further apart, which allows for a more uniform heat distribution over a larger surface area and thus contributes to the NH-D15's superior efficiency.
High RAM compatibility in single fan mode

High RAM compatibility in single fan mode

Thanks to its recessed lower fins, the NH-D15 provides 64mm clearance for tall memory heatsinks in single fan mode, making it compatible with most high end RAM modules on the market. In dual fan mode, the NH-D15 should be used with standard height RAM (up to 32mm).*
Dual NF-A15 140mm fans

Dual NF-A15 140mm fans

The NH-D15 features two of Noctua's premium class NF-A15 140mm fans. Complying with Noctua's AAO standard and featuring sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A15 has quickly built up a reputation as one of the best 140mm fans on the market.
PWM support and Low-Noise Adaptors

PWM support and Low-Noise Adaptors

The NF-A15 premium fans supplied with the NH-D15 support PWM for convenient automatic speed control through the motherboard. In addition, the maximum fan speed can be reduced from 1500 to 1200rpm using the supplied Low-Noise Adaptors for even quieter operation.
Excellent component cooling

Excellent component cooling

Extending below the fin-stacks, the large NF-A15 fans not only contribute to the NH-D15's superb CPU cooling capabilities but also provide massive airflow over surrounding motherboard components and heatsinks, thus ensuring excellent component cooling performance.
SecuFirm2™ multi-socket mounting system

SecuFirm2™ multi-socket mounting system

Noctua’s SecuFirm2™ mounting systems have become synonymous with quality, safety and easy installation. Supporting Intel LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) and LGA20xx (LGA2066, LGA2011-0, LGA2011-3), as well as AMD AM4, AM3(+), AM2(+), FM2(+) and FM1, the SecuFirm2™ mounting included with the NH-U12S is straightforward to install, provides perfect contact pressure and will stand the test of time even under heavy use.
Compatibility with past and future sockets

Compatibility with past and future sockets

Thanks to Noctua’s SecuFirm™ ecosystem, the NH-D15 can be made compatible with the older LGA1366 and LGA775 sockets using the optional NM-I3 mounting kit, which is provided free of charge. If technically possible, Noctua will also provide upgrade kits for future sockets, which makes the NH-D15 a safe long-term investment.
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. Chosen again and again by overclockers and enthusiast users worldwide, it has established itself as a benchmark for premium-quality thermal compounds.
Soldered interface between heatpipes and fins

Soldered interface between heatpipes and fins

With many heatsinks, the fins are press-fitted to the heatpipes. Due to the different thermal expansion coefficients of copper and aluminium, this fit can loosen over years of thermal cycling, which may lead to reduced performance. By contrast, the NH-D15’s fins are soldered to the heatpipes in order to guarantee a superior thermal interface that doesn’t deteriorate even after many years of usage.
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-A15's feature an MTTF rating of more than 150.000 hours and the entire NH-D15 package comes with a full 6-year manufacturer's warranty.
*In chassis with more than 165mm CPU cooler clearance, the front fan can be moved upwards to make room for memory modules taller than 32mm.
NH-D15 chromax.black
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
Height (without fan)
160 mm
Width (without fan)
150 mm
Depth (without fan)
135 mm
Weight (without fan)
980 g
Height (with fan)
165 mm
Width (with fan)
150 mm
Depth (with fan)
161 mm
Weight (with fan)
1320 g
Material
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Max. TDP
Fan compatibility
140x150x25 (with 120mm mounting holes), 140x140x25 (with 120mm mounting holes), 120x120x25
Scope of delivery
  • Black NH-D15 heatsink
  • 2x NF-A15 HS-PWM chromax.black premium fan
  • 2x Low-Noise Adaptor (L.N.A.)
  • 4-pin PWM Y-cable
  • NT-H1 high-grade thermal compound
  • Black SecuFirm2™ Mounting Kit
  • Noctua Metal Case-Badge
6 Years
FAN Specification
Model
2x Noctua NF-A15 HS-PWM chromax.black
Bearing
Max. rotational speed (+/- 10%)
1500 RPM
Max. rotational speed with L.N.A. (+/- 10%)
1200 RPM
Min. rotational speed (PWM, +/-20%)
300 RPM
Max. acoustical noise
24,6 dB(A)
Max. acoustical noise with L.N.A.
19,2 dB(A)
Voltage range
12 V
MTTF
> 150.000 h
NH-D15 chromax.black
14.11.2019 // HardManiacos.com
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NH-D15 chromax.black Review

Una vez probado y analizado el disipador Noctua NH-D15 chromax black, podemos decir que se trata de un buen disipador, que cumple perfectamente su cometido, disipando el calor del procesador a la perfección. Además, el toque en negro, nos permite nuevos diseños dentro de la torre, al que podremos implementar accesorios de la gama chromax de Noctua, para darle una distinción extra a todo el conjunto. Además, con su doble ventilador y torre, conseguiremos una temperatura más estable, con menos ruido, ya que no será necesario que funcionen a muchas rpm para conseguir un enfriamiento correcto de la CPU. Por último, algunos pequeños contras que le vemos, son: que el ventilador situado sobre la RAM sobresale un poco del disipador, además de tener un tamaño algo grande, por lo que, deberemos comprobar si nos cabe en nuestra torre, o elegir una acorde a las dimensiones del mismo; además del peso del conjunto.
Test verdict: "Por todo ello, le damos el premio de calidad-precio, recomendando este disipador para todos aquellos que quieran tener un buen rendimiento en el equipo con temperaturas bajas, además de un toque de elegancia y distinción dentro de él." (Daniel Rey, HardManiacos.com)
08.11.2019 // PAKPG.com
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NH-D15 chromax.black Review

With the finest build quality dual tower heatsink and 140mm huge fans confirms that the cooling operation will be quiet and efficient. In regards to the performance, the temperatures were excellent and supplied NF-A15 HS-PWM Chromax Black 140mm fan proves the quiet heat dissipation process even with only one fan. The SecuFirm2 is the famous mounting set by Noctua that contains all the necessary tools for assembly and it is also in black. Overall, the Noctua NH-D15 Chromax Black proves worthy, easy to install and it is ready to take a role of head of cooling in your system.
Test verdict: "...there is no doubt that the NH-D15 Chromax Black is one of the best enthusiast grade air coolers in the today market." (Zeeshan Ali Khan, PAKPG.com)
04.11.2019 // HWready.it
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NH-D15 chromax.black Review

Siamo giunti alla fine della nostra recensioni, felici delle performance straordinarie di tutti e tre i prodotti. Il NH-D15 dimostra di potersi scontrare a viso aperto con AIO di grosse dimensioni. Neanche dopo due ore di test risultava essere caldo, un ottimo risultato ad una silenziosità eccellente. Inoltre a livello di longevità quello che vi offre un dissipatore del genere è difficile anche solo pensare di poterla ottenere con un AIO. Il NH-U12S ottiene risultati di tutto rispetto mantenendo delle dimensioni decisamente contenute, mentre il piccolo NH-L9i è probabilmente il dissipatore perfetto per build ultra compatte o HPC.
Test verdict: "I dissipatori sono tutti silenziosi, vantano una qualità costruttiva eccezionale e delle performance ottime, per quanto riguarda il D15 capaci di affrontare a viso aperto anche degli AIO di fascia alta!" (Mauro Santoro, HWready.it)
02.11.2019 // Overclocking.com
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NH-D15 chromax.black Review

Avec ce NH-D15 chromax.black, Noctua nous propose un dissipateur qui reprend les mêmes dimensions que le modèle original. Forcément, le ventirad en impose, il faudra être bien vigilent quant à la capacité d’accueil de votre boîtier. Idem pour la RAM puisque ce modèle recouvrira l’intégralité des slots mémoires avec son deuxième ventilateur. Quant aux slots sur la carte mère, il y a de grande chance que le premier port soit aussi obstrué. Malgré tout, c’est également cette taille (en partie) qui lui permet d’être aussi efficace. On l’a vu, il surclasse tous les autres coolings de notre panel. Les températures sont tout bonnement excellentes et le bruit reste très maîtrisé également. Vous l’aurez compris, les NF-A15 fournis font donc des miracles, d’autant que les températures ne s’envolent pas dès que la ventilation passe en 5V. Bref, une référence qui saura se montrer efficace, même en cas de gros overclocking, sans pour autant vous casser les oreilles. Le plus gros changement appliqué par Noctua reste le passage au noir intégral. Si les couleurs emblématiques de la marque vous rebutaient, maintenant, il n’y a plus aucune raison de bouder le constructeur autrichien. Avec ce modèle, tout passe au noir, les ailettes, les caloducs et même les ventilateurs. Et si vous trouvez que l’ensemble reste trop noir, sachez que de petits accessoires existent pour égayer le tout. Noctua NH-D15 Chromax.blackEnsuite, concernant l’installation, pas de différences notables avec le NH-U12A, la marque reprenant son fameux système de montage SecuFirm2. En quelques instants, vous aurez un dissipateur prêt à fonctionner d’autant que via le bundle (qui est très complet), vous n’aurez pas à chercher votre trousse à outils. En effet, Noctua fournit les outils nécessaires au montage.
Test verdict: "Si jusqu’à présent vous évitiez Noctua pour ses couleurs, avec ce NH-D15 chromax.black, vous pouvez vous lancer sans craintes. En effet, cette version reste toujours aussi performante et silencieuse. L’ensemble se veut également simple à installer, le bundle est complet et la garantie longue de 6 ans !" (Yannick Fromentoux, Overclocking Made in France)
29.10.2019 // PCinfo.co.il
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NH-D15 chromax.black Review

כפי שניתן לראות מתוצאות הבדיקה, נוקטואה הצליחה לשמור על הביצועים של הקירור בהשוואה לאח הזקן והמכוער שלו (למרות שבסוף היופי בעיני המתבונן) כאשר ההבדלים שהתקבלו במהלך הבדיקה נובעים מכל מיני משתנים, כמו הבדלים בין המאווררים או רעש מהסביבה שגרם להבדלים במדידת עוצמת הרעש של המאווררים, גם אם ההבדלים נגרמו בגלל הצביעה של הקירור עדיין מדובר בהבדל מינורי שמאוד קשה לקבוע מה הסיבה לו. אם עד כה נמנעתם מלרכוש קירורים של נוקטואה בגלל המראה הלא כל כך אטרקטיבי שלהם (בלשון המעטה) אבל תמיד רציתם בגלל הביצועים שלהם, עכשיו לא תצטרכו להתפשר ותוכלו ליהנות משני העולמות.
Test verdict: "אם עד כה נמנעתם מלרכוש קירורים של נוקטואה בגלל המראה הלא כל כך אטרקטיבי שלהם (בלשון המעטה) אבל תמיד רציתם בגלל הביצועים שלהם, עכשיו לא תצטרכו להתפשר ותוכלו ליהנות משני העולמות." (Yair Zarfati, PCinfo.co.il)
28.10.2019 // Crazypc.ro
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NH-D15 chromax.black Review

În era rgb-ului și a modding-ului cei de la Noctua s-au gândit să aducă pe piață o nouă gamă de produse, mai precis gama Chromax. Mai pe scurt gama Chromax se rezumă la ia ceea ce a fost cel mai bun de până acum și vopsește-l în negru . În acest moment doar NH-D15, NH-U12S și NH-L9i se bucură de negru.
Test verdict: "Regele a murit, trăiască regele ! D15 regele coolerelor pe aer acum poartă haine negre." (Vlad Buluta, Crazypc.ro)

NA-HC3 chromax.black.swap

  • chromax.black.swap edition heatsink covers with swappable inlays (red, blue, green, yellow, black, white)
  • Compatible with Noctua NH-D15, NH-D15S and NH-D15 SE-AM4 heatsinks
  • Ideal for matching with Noctua’s industrialPPC or chromax line fans and anti-vibration pads
NH-D15 chromax.black

NA-HC4 chromax.black

  • chromax.black edition heatsink covers
  • Compatible with Noctua NH-D15, NH-D15S and NH-D15 SE-AM4 heatsinks
  • Ideal for matching with Noctua’s industrialPPC or chromax line fans and anti-vibration pads
NH-D15 chromax.black

NA-HC4 chromax.white

  • chromax.white edition heatsink covers
  • Compatible with Noctua NH-D15, NH-D15S and NH-D15 SE-AM4 heatsinks
  • Ideal for matching with Noctua’s industrialPPC or chromax line fans and anti-vibration pads
NH-D15 chromax.black

NA-SAVP3 chromax.black

  • Anti-vibration pads for NF-A15 series
  • chromax.black edition
NH-D15 chromax.black

NA-SAVP3 chromax.blue

  • Anti-vibration pads for NF-A15 series
  • chromax.blue edition
NH-D15 chromax.black

NA-SAVP3 chromax.green

  • Anti-vibration pads for NF-A15 series
  • chromax.green edition
NH-D15 chromax.black

NA-SAVP3 chromax.red

  • Anti-vibration pads for NF-A15 series
  • chromax.red edition
NH-D15 chromax.black

NA-SAVP3 chromax.white

  • Anti-vibration pads for NF-A15 series
  • chromax.white edition
NH-D15 chromax.black

NA-SAVP3 chromax.yellow

  • Anti-vibration pads for NF-A15 series
  • chromax.yellow edition
NH-D15 chromax.black

NF-A15 HS-PWM chromax.black.swap

  • 140x150x25mm, round frame
  • 4-pin PWM, 1500rpm max.
  • chromax.black.swap edition
NH-D15 chromax.black

NM-I3 Mounting-Kit

  • The NM-I3 SecuFirm2™ Mounting-Kit makes Noctua CPU coolers compatible with Intel's LGA775 & LGA1366 sockets.
NH-D15 chromax.black

NT-H2 10g

  • Further improved second generation of the award-winning NT-H1 with even better thermal performance
  • Not electrically conductive and non-corroding
  • Excellent long-term stability (usage time on the CPU up to 5 years)
  • 10g pack for around 9-60 applications (depending on CPU size, e.g. ~9 applications for TR4, ~60 for LGA1151)
NH-D15 chromax.black

NT-H2 3.5g

  • Further improved second generation of the award-winning NT-H1 with even better thermal performance
  • Not electrically conductive and non-corroding
  • Excellent long-term stability (usage time on the CPU up to 5 years)
  • 3.5g pack for around 3-20 applications (depending on CPU size, e.g. ~3 applications for TR4, ~20 for LGA1151)
NH-D15 chromax.black

NA-SCW1

  • Cleaning wipes for removing thermal compounds such as Noctua NT-H2 and NT-H1
  • Ideal for cleaning the contact surface of the heatsink as well as the heat-spreader of CPUs, GPUs or other chips
  • Pre-moistened with a custom detergent mixture for easy and efficient cleaning
  • Large size (15x12cm) is usually enough to clean both the chip and the cooler
  • Pack contains 20 individually packed wipes
NH-D15 chromax.black

You can either buy from our local sales partners or directly from us via our official Amazon and eBay stores:



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Installation Manual (PDF)

Information Sheet (PDF)

FAQs

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

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

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

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

Should I take the cooler off before transporting my system?

I have difficulties installing the cooler, can you help?

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

Why doesn't the supplied backplate fit my LGA2066 / LGA2011 motherboard?

Is the cooler compatible with the LGA1151 socket?

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

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?

Does the coating of the chromax.black coolers affect performance?

Why is my Ryzen 3000 processor getting so hot? Why are Ryzen 3000 CPUs running hotter than previous generation Ryzen CPUs with the same TDP rating? Is there anything wrong with my cooler?

How can I check if my Noctua CPU cooler already includes AM4 mounting parts?

What’s the difference between NH-D15 and NH-D15S?

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

Is it possible to use the cooler with vertical graphic cards?

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

Which Noctua CPU coolers are compatible with Intel LGA2066?

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

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

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

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

How to remove the base protection cover?

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 supplied y-cable is missing a wire at one of the two connectors, is it faulty?

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

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

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

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

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

Is the cooler compatible with the LGA2011-3 socket?

Can I install a third fan on the NH-D15?

How big is the NH-D15 and how much clearance does it provide for RAM and chipset coolers?

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

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

Can I install a 140mm fan with a square frame (e.g. NF-A14)?

Is the cooler compatible with LGA775 and LGA1366?

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

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 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

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.

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).

Should I take the cooler off before transporting my system?

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, for safety reasons, taking the cooler off. Noctua cannot be held responsible for any damage that may arise due to excessive stress during transport if you keep the heatsink installed.

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.

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.

Why doesn't the supplied backplate fit my LGA2066 / LGA2011 motherboard?

The supplied backplate is for LGA115x only and there is no backplate required for installation on LGA20xx (LGA2066, LGA2011-3, LGA2011-0). Please refer to the installation manual or our installation video for how to install the heatsink on LGA20xx.

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.

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 (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-D15 SE-AM4
NH-D15S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-U14S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-U12S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-U12S SE-AM4
NH-U9S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-D9L (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-C14S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-L12S
NH-L9x65 (AM4 mounting included since 2019, only older coolers require upgrade kit)
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 (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-D14
NH-D14 SE2011
NH-D15 (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-D15S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-D9L (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-L12
NH-L9x65 (AM4 mounting included since 2019, only older coolers require upgrade kit)
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 (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-U12S (AM4 mounting included since 2019, only older coolers require upgrade kit)
NH-U9S (AM4 mounting included since 2019, only older coolers require upgrade kit)

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 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.

Does the coating of the chromax.black coolers affect performance?

Thanks to thoroughgoing optimisations of the coating material and process, the chromax.black models provide the same, renowned quiet cooling performance as their regular, non-coated counterparts.

Why is my Ryzen 3000 processor getting so hot? Why are Ryzen 3000 CPUs running hotter than previous generation Ryzen CPUs with the same TDP rating? Is there anything wrong with my cooler?

The latest Ryzen 3000 processors (except APU models) differ from previous Ryzen generations in that they are no longer based on a single, large chip but use a multi-chip approach with smaller chips instead. Depending on the exact model there can be one (6 and 8-core models) or two (12 and 16-core models) actual CPU-Dies (CCD) on the package. Each processor also uses an I/O-Die (IOD), which contains things like the memory controller, PCIe controller, connections to the motherboard chipset and other functions.



Because of this design change and the switch to a smaller 7nm manufacturing process, the heat distribution of the overall processor is much different from older 14nm and 12nm based single-chip Ryzen processors with a similar power draw.

Depending on the exact CPU model, its specified TDP value and possibly extended power limits (precision boost overdrive), a single CPU-die can create a heatload of up to 130W easily, whereas the I/O-die usually creates a heatload of about 10W. Due to the small size of the CPU-die, the heat density (W/mm²) of this chip is very high. For example, a 120W heatload at a chip-size of 74mm² results in a heat-density of 1.62W/mm², whereas the same heatload on an older Ryzen processor with a chip-size of 212mm² gives a heat-density of just 0.57W/mm².

This large difference in heat-density is the reason why newer Ryzen 3000 processors become much warmer at similar heatloads than their predecessors.

Furthermore, Ryzen 3000 CPUs are using the rated temperature headroom (up to 95°C) quite aggressively in order to reach higher boost clocks. As a result, it is absolutely no problem and not alarming if the processor runs into this temperature limit. The clock speed and supply voltage will be adjusted automatically by the processor itself in order to remain within AMD’s specifications and to prevent overheating.

Due to the higher heat density, higher thermal limits and more aggressive boost clock usage, it is perfectly normal that Ryzen 3000 CPUs are reaching higher temperatures than previous generation Ryzen CPUs with the same TDP rating. Higher CPU temperatures are normal for Ryzen 3000 processors and not a sign of that there is anything wrong with the CPU cooler.

How can I check if my Noctua CPU cooler already includes AM4 mounting parts?

The NH-C14S, NH-D14, NH-D15, NH-D15S, NH-D9L, NH-L9x65, NH-U12S, NH-U14S, NH-U9S include AM4 mounting parts since 2019. There are four easy ways to verify that your cooler already includes AM4 mounting parts:
  1. Check the socket compatibility specifications on the packaging. If they include AM4, AM4 parts are included.




  2. Opening the packaging, check the printing on the accessories box. If the AMD parts pictured on the box include both a white and a grey spacer, the cooler supports AM4.




  3. Opening the accessories box, check the AMD bag. If it includes both white and grey spacers, the cooler supports AM4.




  4. Check if the AMD bag contains either NM-AMB8 or NM-AMB11 mounting bars.


What’s the difference between NH-D15 and NH-D15S?

The NH-D15S is an asymmetrical single fan version of the NH-D15 that has been tailored to provide superior RAM and PCIe compatibility. In particular, the NH-D15S differs from the NH-D15 in the following regards:
  1. Asymmetrical design: While both coolers are 150mm wide, the NH-D15S is off-set towards the top edge of the motherboard and thus provides more clearance towards the PCIe slot.
  2. RAM clearance: While the front fan of the NH-D15 overhangs the RAM slots on many motherboards, the single fan NH-D15S provides 65mm clearance for tall RAM modules on all compatible sockets.
  3. Total height: While the front fan of the NH-D15 must be installed slightly higher in order to provide sufficient clearance for standard height (32mm) RAM modules, the single center fan of the NH-D15S can be installed lower on the fin stack. As a result, the total height of the NH-D15 including fans is 165mm whereas the total height of the NH-D15S including its single center fan is only 160mm.
  4. Performance: While the base performance of the NH-D15 and NH-D15S heatsinks is identical, the dual fan configuration of the NH-D15 can provide 1-3°C better performance. Users who have sufficient room can also upgrade the NH-D15S with either a 120mm (e.g. NF-A12x25 PWM) or round 140mm (e.g. NF-A15 PWM) fan on the front fin stack in order to achieve the same performance levels as the NH-D15. The fan clips for installing a second fan are included with the NH-D15S.

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

Current processors from Intel, especially the unlocked models with the suffixes C, K, X or XE (e.g. Core i7-8700K, Core i9-7900X oder Core i9-9900K) can dissipate noticeably more heat than indicated by the TDP specification.

While many motherboard models stick to the recommended power levels and clock speeds settings from Intel, there are models where the UEFI BIOS is configured in such a way that:

  1. the TDP limits are extended or disabled.
  2. the motherboard applies automatic overclocking by default, e.g. by raising the supply voltage of the CPU and using higher Turbo-Mode multipliers.

Depending on the load scenario and CPU configuration settings, the actual power draw can be 1.5-3 times as high the stated TDP value. This can lead to temperature issues, especially when using smaller coolers, compact cases or cases with poor airflow, when some applications create very high loads, e.g. Prime95 with AVX2 support, 3D-rendering or simulation software.

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. You might also want to limit the TDP to either the specified value by Intel or a value that is 5-10W below the value previously read out from the CPU. This can be done in BIOS by setting the “Long Term Duration Power” manually instead of “Auto”.

Furthermore, 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.

The option to set an AVX-offset value is usually available for the following CPU generations:

  • LGA1151:7th, 8th and 9th generation (Kaby Lake, Coffee Lake)
  • LGA2011-3: 6th generation (Broadwell-E)
  • LGA2066: 7th and 8th generation (Skylake-X)

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 most 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.

Please also note that CPUs that use thermal paste instead of soldering between the DIE and the heatspreader generally run hotter. Due to the thermal bottleneck created by the thermal paste, temperatures can be high even at the specified TDP.

Is it possible to use the cooler with vertical graphic cards?

Depending on the chassis, card and motherboard being used, installing PCIe cards in a vertical position using riser cards may cause compatibility issues with CPU coolers. Whether there will be a problem or not depends on the exact position of the card (which is determined by the PC case and/or optional vertical GPU holder bracket), the width of the card as well as the position of the CPU socket on the motherboard. In order to verify that there is sufficient space for the cooler, please measure the distance between the centre of the CPU socket and the top of the PCI card in order to make sure that the cooler fits.

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.

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

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 600 or 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 in the BIOS 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, by using 3rd party tools like IPMItool or IPMIutil, or by requesting a modified BIOS file from Supermicro, which takes the minimum fan speed of Noctua fans into account (charges might apply). Please note that any modifications performed with 3rd party tools are done at your own risk and that Noctua can not be held responsible for any possible issues.

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.

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

Please refer to our CPU compatibility list for information on maximum recommended TDP and heat dissipation.

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 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

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



The supplied y-cable is missing a wire at one of the two connectors, is it faulty?

No. As mainboards can process only one rpm-signal per fan header, it would cause problems if the cable transmitted rpm-signals of both fans. For this reason, one of the two connectors does not have an rpm wire and only the fan on the other connector will transmit an rpm signal. Automatic speed control of both fans will work independently from the second fan’s rpm signal.

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

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°.

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

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.

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 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.

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.

Can I install a third fan on the NH-D15?

Adding a third fan to the NH-D15 only yields minimal improvements in cooling performance (0.5°C max.), but noise levels will increase significantly. As this doesn’t make sense from a technical point of view, we don’t include mounting hardware for a third fan in the box and don’t offer it separately.

How big is the NH-D15 and how much clearance does it provide for RAM and chipset coolers?

Please refer to the following drawing for the exact measurements and clearance for RAM and chipset coolers:

D15

The front fins of the NH-D15 generally protrude over the RAM slots. Due to the recessed lower fins, it is still possible to use RAM modules with up to 64mm height in single fan mode. In dual fan mode, the front fan will sit above the RAM slots as well. In this case, Noctua recommends using standard height RAM (up to 32mm). However, in chassis with more than 165mm CPU cooler clearance, the front fan can be moved upwards to make room for memory modules taller than 32mm (e.g. moving the fan 5mm up will increase the total height from 165 to 170mm and make room for 37mm tall modules).

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

Please refer to our socket compatibility chart.

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.

Can I install a 140mm fan with a square frame (e.g. NF-A14)?

Yes, fan clips for installing square frame 140mm fans (such as the NF-A14) are available on request via our customer support.

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.

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.

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