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Le NH-U14S, radiateur pour CPU de 14cm, est le fleuron de la gamme de radiateurs simples NH-U de Noctua qui bénéficie de plus de 400 récompenses et recommandations de la part de la Presse internationale. Conçu autour de 6 caloducs imposants et équipé d’un ventilateur 140mm NF-A15 compatible PWM (offrant donc un pilotage automatique de la vitesse), le NH-U14S repousse encore plus loin les performances de refroidissement silencieux de la gamme NH-U. Néanmoins, sa finesse (52mm) lui confère toujours une excellente compatibilité avec les modules mémoire hauts sur les configurations LGA2011/LGA2066. Complété du système de fixation haut de gamme multi-socket SecuFirm2™, de la pâte thermique haute performance NT-H1 et d’une garantie constructeur totale de 6 ans, le NH-U14S constitue une solution de grande qualité permettant d’allier performance, silence et excellente compatibilité.
Détails
La gamme NH-U : une vraie success story

La gamme NH-U : une vraie success story

Le NH-U14S est le premier modèle 140mm de la célèbre gamme Noctua NH-U. Lancée en 2005, cette gamme de dissipateurs pour CPU est devenue la référence haut de gamme incontestée ; elle s'est distinguée par plus de 400 récompenses et recommandations décernées par la Presse internationale spécialisée papier et Internet.
Compatibilité RAM totale sur LGA2011

Compatibilité RAM totale sur LGA2011

Grâce à une conception caractérisée par une faible épaisseur (52mm) et un design étudié pour le LGA2011, le NH-U14S n'empiète pas sur la zone dédiée aux modules de RAM et offre ainsi une compatibilité complète avec les barrettes de mémoire hautes. Pour certaines cartes mères LGA115X et AMD, le ventilateur frontal peut parfois dépasser au niveau du premier slot mémoire ; veuillez dans ce cas utiliser des modules de taille standard (32mm) qui permettront alors d'utiliser cet emplacement mémoire.*
Une dimension raisonnable pour une meilleure compatibilité globale

Une dimension raisonnable pour une meilleure compatibilité globale

Avec une hauteur de 165mm, le NH-U14S est assez court pour s'intégrer dans la plupart des boîtiers haut de gamme actuels. La largeur de 150mm (ventilateur avec ses fixations inclus) permet au NH-U14S de garantir une meilleure compatibilité avec les configurations SLI ou Crossfire comparée à celle offerte par les ventirads dont la largeur excède 150mm ou utilisant des ventilateurs excédant cette même dimension.
Ventilateur NF-A15 PWM

Ventilateur NF-A15 PWM

Le NF-A15 est un ventilateur 140mm de haute qualité possédant un cadre arrondi répondant à la norme Noctua AAO. Bénéficiant des dernières avancées technologiques dans le domaine de l'aérodynamisme, dont les Flow Acceleration Channels, le NF-A15 repousse encore plus loin les performances de refroidissement qui ont fait la renommée du célèbre NF-P14.
Compatibilité PWM et Adaptateur Faible Bruit

Compatibilité PWM et Adaptateur Faible Bruit

Le ventilateur 140mm NF-A15, livré avec le NH-U14S, peut bénéficier d'un pilotage automatique de la vitesse PWM via la carte mère. De plus, et pour réduire encore les émissions sonores, la vitesse maximale peut être plafonnée à 1200rpm (au lieu de 1500rpm) grâce à l'utilisation de l'adaptateur faible bruit (L.N.A.).
Silentblocs anti-vibration et agrafes pour un second NF-F12

Silentblocs anti-vibration et agrafes pour un second NF-F12

Pour ceux qui souhaitent améliorer encore le niveau de performance, l'ajout d'un second ventilateur NF-A15 permettra de créer une configuration en « push/pull » (aspiration/extraction). A cette fin, le NH-U14S est livré avec un jeu de silentblocs anti-vibration sur-mesure qui permettent de décaler le ventilateur arrière de 5mm afin d'améliorer le confort acoustique en mode dual (double ventilateur).*
Système de fixation SecuFirm2™

Système de fixation SecuFirm2™

Les systèmes de fixation SecuFirm2™ répondent aux attentes les plus élevées en termes de qualité, sécurité et de facilité d'installation. Compatible avec les Intel LGA115x (LGA1150, LGA1151, LGA1155, LGA1156), LGA2011, LGA2066 et AMD (AM3+, AM2+, FM1, FM2, FM2+), le système SecuFirm2™ fourni avec le NH-U14S assure une pression de contact parfaite et un confort d'installation maximum sur l'ensemble des sockets actuels.
Compatibilité avec les sockets anciens et futurs

Compatibilité avec les sockets anciens et futurs

Répondant à la norme ouverte SecuFirm™, le NH-U14S peut devenir compatible avec les anciens sockets LGA1366 et LGA775 grâce à l'utilisation du kit de montage optionnel MM-I3 qui est fourni gratuitement par Noctua. Si cela est techniquement possible, Noctua proposera par ailleurs des kits d'adaptation pour les sockets futurs.
Pâte thermique NT-H1

Pâte thermique NT-H1

Solution TIM haut de gamme plébiscitée et récompensée à plus de 100 reprises dans le monde par des journalistes spécialisés, la NT-H1 de Noctua offre une résistance thermique très faible, une fiabilité et une facilité d'application étonnantes.
Garantie Fabricant de 6 ans

Garantie Fabricant de 6 ans

La réputation des ventilateurs Noctua n'est plus à faire tant pour leur qualité que pour leur étonnante longévité. Comme pour tous les modèles de ventilateurs Noctua, le NF-A15 bénéficie d'un MTTF de plus de 150 000 heures de tests et la totalité des éléments du package NH-U14S bénéficie d'une garantie fabricant totale de 6 ans.
NH-U14S
Spécifications radiateurrn
Intel LGA2066, LGA2011-0 & LGA2011-3 (Square ILM), LGA1156, LGA1155, LGA1151, LGA1150 & AMD AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+ (backplate requis), AM4 avec NM-AM4-UxS
Hauteur (ventilateur non compris)
165 mm
Largeur (ventilateur non compris)
150 mm
Profondeur (ventilateur non compris)
52 mm
Hauteur (ventilateur compris)
165 mm
Largeur (ventilateur compris)
150 mm
Profondeur (ventilateur compris)
78 mm
Poids (ventilateur non compris)
770 g
Poids (ventilateur/s compris)
935 g
Matériau
cuivre (fond et caloducs), aluminium (plaques de refroidissement), soudé & nickelé
TDP max.
voir guide TDP
Dimensions du ventilateur
140x150x25 (avec fixation 120mm), 140x140x25 (avec fixation 120mm), 120x120x25
Volume de livraison
  • Ventilateur haut de gamme NF-A15 PWM
  • Adaptateur Faible Bruit (L.N.A.)
  • Pâte thermique NT-H1
  • Système de fixation SecuFirm2™
  • Silentblocs anti-vibration et agrafes pour un second NF-A15
  • Noctua Case-Badge en métal
Garantie
6 ans
Spécifications ventilateur
Modèle
Noctua NF-A15 PWM
Type roulements
Vitesse de rotation max. (+/-10%)
1500 RPM
Vitesse de rotation avec L.N.A. max. (+/-10%)
1200 RPM
Vitesse de rotation min. (PWM, +/-20%)
300 RPM
Niveau sonore max.
24,6 dB(A)
Niveau sonore avec L.N.A. max.
19,2 dB(A)
Puissance consommée
1,56 W
Tension
12 V
MTTF
> 150.000 h
NH-U14S
NH-U14S
NH-U14S
SecuFirm2™ AMD installation (NM-AMB3)
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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09.05.2013 // TweakTown.com
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NH-U14S test

What is there that I can't say that leaves this larger member of the NH-U series of coolers painted in a positive light? Well, to be honest, there isn't anything I can rightly complain about. When you have a cooler that is taking what other manufacturers have tried and failed, leaving them to resort to using a dual tower or a super thick single tower, and still some cannot compete at this level. Noctua has proven to me, once again, why I hold them in such high regard. They took the basic idea everyone has used for years, and with a few tweaks to the fin designs, figuring out the best method of heat pipe dispersal, and equipping the cooler with a 150mm fan that just kicks ass doesn't hurt things one bit either. With just one fan on the NH-U14S there are only two coolers that were better on our charts, and from what I recall both of these coolers cost more when they were released. In all honestly, we are talking about a measly two degrees across all three of these air coolers, and if you want to spend an extra $25, you can get the second NF-A15 PWM fan and run right with the big dogs on the list. The one thing you will get with the NH-U14S, that neither the Silver Arrow SB-E nor the Thermaltake Frio Extreme offered, is peaceful silence. Where the other option would dig deeper into your pockets, and also make your ears bleed, Noctua takes them head on and shows you can have the best of both worlds. The icing on the cake is that you can run just behind the big dogs for less than $80. It seemed for a while there that no company was able to produce a top tier cooler that could take on the twin tower monsters that were such a success, but at the expense of just about everything on the top half of the motherboard. Noctua increased the size of this cooler not to get in the way too much, but allowed enough to be both cost effective and very efficient at removing heat from your CPU. I see absolutely no reason why I can't fully support and recommend the new NH-U14S, as it kicks ass and takes names, and like a ninja, silently takes on the competition, until it is left on the top of the pile after the successful battle. Noctua may be a little outside the box for some, but they have proven to me that this cooler is where it's at currently, and should be a great selling cooler, once stock does arrive on shelves.
Verdict du test: "The NH-U14S is a complete success! It took on the best of the best and can do the same job with much less cooler, and much less noise than anything comparable that I have tested to date." (Chad Sebring, TweakTown.com)
28.06.2013 // techPowerUp.com
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NH-U14S test

Let us start with noise levels, or should I say lack thereof? This cooler is quiet, topping out at 42 dBA in its default, single-fan configuration to place second on our sound-level charts when at full fan speed. When using two NF-A15 PWM fans, the noise level climbs by 3 dBA for 45 dBA at full fan speeds. Cooling performance is exceptional for a single-tower design. It manages to keep up with the much larger Phanteks PH-TC14PE, which is the best-performing air cooler I have tested so far. The NH-U14S's performance proves that a smaller heatsink can go toe to toe with heavyweight coolers--without high RPM fans. The easy install is also a huge plus. I say that about most Noctua coolers, but the SecuFirm 2 mounting system really is exceptional, and the heatsink's design makes it even easier to work with now. Build quality is as always with Noctua's coolers absolutely fantastic--no gaps on the heatpipes and no bent fins; the entire heatsink's overall quality confirms that the NH-U14S is a premium CPU cooler. Noctua has also included some rubber anti-vibration pads with their NF-A15 PWM fans. While not a deal maker, this simple inclusion does cut down on noise and is one of those extras that shows they care about giving the end user a great experience with their products. The option to mount a second fan also lets users improve the overall performance of the NH-U14S; however, it does come at a greater cost. Finally, the warranty of six years is also one of the best warranties available. With a proof of purchase, Noctua will even provide updated mounting hardware throughout its span. This goes far beyond what most of their competition offers.
Verdict du test: "The NH-U14S from Noctua is an amazing cooler. Its performance has it take on some of the best-performing air coolers in the industry." (Raymond Lemar, techPowerUp.com)
21.04.2013 // eTeknix.com
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NH-U14S test

At stock we can see the NH-U14S does amazingly well, battling its way past the Seidon 240M, which is a 240mm AIO water cooling system. It also manages to grab an extra degree over its 120mm sibling the Noctua NH-U12S. [...] Overclocking was where we brought in some push-pull results for you guys to see. With the default single fan and PWM profile we saw a 38.3 delta which meant it was the best air cooler on our records by quite some margin. With a single fan at 100% speed (1500 RPM) we were able to take down a PWM operated Antec Kuhler 1220 240mm AIO system – impressive indeed. Push-pull scaled equally well shaving off another 2 degrees delta at PWM. With maximum fan speed in push-pull we saw results encroaching on the Swiftech H220 at PWM speeds.
Verdict du test: "If you are looking for an Air CPU cooler that can offer you 100% RAM compatibility, best-in-class performance, silence, top-of-the-line build quality and a relatively affordable price point then you can’t really go wrong with the Noctua NH-U14S. Any PC enthusiast would be over the moon to be able to put this CPU cooler in their rig, and understandably so. With all that said Noctua’s NH-U14S is an eTeknix Editor’s Choice award winner." (Ryan Martin, eTeknix.com)
05.12.2013 // [H]ardOCP
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NH-U14S test

Just like that we have a new performance king. The NH-U14S is able to take the top spot in both of our performance tests. It beat out the much larger and dual fan Dark Rock Pro 2 while only using one fan in a much smaller size. Noctua has a winner on its hands so far but let’s look a little closer and see if all this performance comes at the expense of our ears. [...] Let’s get one thing out of the way. Noctua has never been a value brand. The premium price tag of the NH-U14S is backed up by extra attention to detail in the installation process and added accessories, but the crowning jewel is its top tier performance. The included fan is also engineered to be quiet without sacrificing performance which is always a great plus. It is nuances such as these that separate Noctua from the rest of the pack and contribute to the premium feel of its coolers. The NH-U14S is not an inexpensive cooler but this is a case where you absolutely pay top dollar for what you get. In a world where you have air cooler prices encroaching on All-in-One water cooling prices, with the NH-U14S you also have air cooling performance encroaching on AIO water cooling performance.
Verdict du test: "The Noctua NH-U14S impressed us with each test we subjected it to. The NH-U14S is an elegant powerhouse that’s able to handle high heat loads while operating in a quiet envelope. Noctua has a winner on the hands with the NH-U14S [...]. With its game changing performance and low noise output we are happy to award the Noctua NH-U14S the [H]ardOCP Editor’s Choice Gold Award." (Marc Adams, [H]ardOCP)
30.09.2013 // PC-Max.de
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NH-U14S test

Beide Kühler wissen absolut zu überzeugen. Der größere NH-U14S setzt sich fast durchgehend an die Spitze des Testfeldes. Lediglich im Vergleich bei einer Lautstärke von 31 Dezibel wird er vom Thermalright Archon SBE auf den zweiten Platz verdrängt. Der kleinere NH-U12S hinkt nur wenig hinterher und kann selbst viele deutlich größere Kontrahenten in die Schranken weisen. Fassen wir unsere Eindrücke noch einmal zusammen: Beide Noctua-Kandidaten lassen kaum Raum zur Verbesserung. Sämtliche Komponenten wurden sorgsam ausgewählt und zusammengestellt, sodass ein rundes Gesamtpaket nur die logische Konsequenz zu sein scheint. Von der Materialgüte über die Montage bis zur Wahl des Lüfters, gibt es kaum Grund zur Kritik. In Hinsicht auf die Kompatibilität scheint Noctua auf den ersten Blick auf ein wenig Kühlleistung zu verzichten. Schaut man sich allerdings die Resultate an, in denen die beiden Kühler teils deutlich wuchtigere Kühler in die Schranken weisen können, bleibt so eine Kritik allerdings aus.
Verdict du test: "Vom Noctua NH-U14S gibt es ausschließlich Positives zu berichten. Die Leistung ist fast durchgängig die beste in unserem Testfeld. Sowohl die Montage als auch die Fertigungsqualität befinden sich auf allerhöchstem Niveau. Der NF-A15 PWM ist der beste uns bekannte 140-Millimeter-PWM-Lüfter, welcher durch hohe Laufruhe, starke Leistung, eine gute Regelbarkeit und ein großes Drehzahlspektrum gleichermaßen zu gefallen weiß." (Niklas Dietzek, PC-Max.de)
27.09.2013 // PC Games Hardware 11/13
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NH-U14S test

Im Betrieb zeigt der NH-U14S eine ausgezeichnete Leistung: Bei maximaler Drehzahl kühlt er unseren voll belasteten 2600K auf 43,8 °C. Daran scheitern sogar manche Kompaktwasserkühlungen, wie es der Test auf den Seiten vorher zeigt. Dabei wird der Kühler bei etwa 1.500 U/min maximal 1,9 Sone laut – nicht wirklich leise, aber auch nicht störend. Für Silent- Fans hat Noctua noch einen Low- Noise-Adapter in den Karton gelegt.
Verdict du test: "Insgesamt ist der NH-U14S ein sehr gelungener Kühler, der sich an die Spitze der bisher mit diesem Testsystem getesteten Kühler setzt." (Reinhard Staudacher, PC Games Hardware 11/13)
26.05.2017 // GamesVillage.it
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NH-U14S test

Nella fase in Stress, il dissipatore si è comportato molto bene, dando dei risultati ottimi, e torno a ripetere, problemi di silenziosità. Parliamo di temperature assolutamente tranquille, i test sono stati svolti con una temperatura d’ambiente non troppo d’aiuto, e sono stati fatti più volte nel termine di una settimana.
Verdict du test: "Il Noctua NH-U14S è un dissipatore che può tranquillamente contendersela con sistemi di raffreddamento a liquido di altre marche, ma con 40 euro in meno. Inoltre è altamente silenzioso il ché lo rende sicuramente migliore anche di molti altri dissipatori ad aria, grazie alle ventole NF-A15 e alla tecnologia SSO. Si tratta di un prodotto di manifattura altissima, la qualità costruttiva è lavorata al dettaglio e diciamocelo... è abbastanza aggressivo. " (Gabriele Vantaggiato, GamesVillage.it)
24.05.2017 // Anandtech.com
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NH-U14S test

[T]he thermal performance of the NH-U14S is significantly superior [...], especially when the cooler needs to handle a high thermal load. This higher thermal performance coupled with Noctua's excellent reputation for their after-sales support gives the NH-U14S an edge over its competition, regardless of its higher retail price.
Verdict du test: "Noctua’s NH-U14S stands out by pretty much every metric" (E. Fylladitakis, Anandtech.com)
26.04.2017 // Vmodtech.com
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NH-U14S test

หลังจากทำการทดสอบบนชุด Intel 5960X ที่ความเร็ว 4.0 MHz ด้วยไฟ 1.1 volt ความร้อนสูงสุดจากการรัน OCCT นั้นสูงสุดที่ 85 องศาเซลเซียสโดยสามารถผ่านการทดสอบสบายๆครับ
Verdict du test: "สำหรับการทดสอบ NOCTUA NH-U14S ที่ วันนี้ทำผลงานได้ดีเลยทีเดียวครับกับฮีตซิงค์ในแบบ Tower CPU Cooler ที่มีขนาดไม่ใหญ่มากนักและใช้พัดลมรอบเบาๆขนาด 140 มิลลิเมตร เสียงรบกวนในขณะทำการทดสอบนั้นก็เบาครับด้วยพัดลมที่ได้ออกแบบมาเป็นอย่างดี รอบพัดลมนั้นก็จะวิ่งอยู่แถวๆ 1300-1400 ครับ ตรงนี้เราสามารถตั้งความเร็วรอบได้หรือว่าจะเสียบไฟโดยตรงจากหัวของ Power Supply เลยก็ได้ครับ ความเร็วรอบจะได้วิ่งสูงสุดอยู่ตลอดเวลา สิ่งที่น่าสังเกตุคือการติดตั้งที่สามารถทำได้อย่างง่ายดายเลย บนมาเธอร์บอร์ด ASUS RAMPAGE V Extreme นั้นแทบไม่ต้องถอดบอร์ดออกมาเลย แค่ใส่แบร๊คเก็ต เสียบซิ้งค์ แล้วใช้ไขควงที่ทาง Noctua เตรียมมาให้ซึ่งยาวมากและสะดวกมากด้วย โดยรวมแล้วถือเป็น CPU Heatsink ที่น่าสนใจและสวยงามเป็นอันดับต้นๆในตลาดเลยครับ" (Vmodtech.com)
04.04.2017 // Pokde.net
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NH-U14S test

From the result, we can see that the Noctua NH-U14S cooling performance in its dual fan configuration is on par with the Noctua NH-D15. Adding the second fan shaves 5ºC off the load temperatures, and lets the CPU be 3ºC cooler at idle.
Verdict du test: "The Noctua NH-U14S’ cooling performance is great, especially in its dual fan configuration. Despite being so slim, it managed to cool our Intel Core i7 5820K processor." (Muhammad Firdaus, Pokde.net)

Instructions de montage (PDF)

Feuille d'informations (PDF)

FAQs

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

I get a CPU fan error despite the fan is running!

Is the cooler compatible with AMD FM2+?

Quels ventirads Noctua sont compatibles avec le LGA1150 ?

How big is the NH-U14S and how much clearance does it provide for RAM and chipset coolers?

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

How can I determine which backplate revision I’ve got?

Can square 140mm fans be installed on this cooler?

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 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?

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?

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

Is the cooler compatible with the LGA1151 socket?

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?

Does the NF-A15 PWM that comes with Noctua coolers run at a different speed (1500rpm) than the retail model (1200rpm)?

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?

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

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?

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

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

Pourquoi le fond du refroidisseur Noctua n'est-il pas brillanté et poli ?

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 independent from the second fan’s rpm signal.

I get a CPU fan error despite the fan is running!

Some mainboards display a CPU fan error when the fan speed falls below a certain threshold, e.g. 900rpm. If you want to run the fan below this speed (e.g. using the supplied U.L.N.A.), please adjust the threshold in the BIOS or disable CPU fan error warning.

Is the cooler compatible with AMD FM2+?

As the hole spacing for CPU cooler installation on FM2+ is the same as on AM2, AM2, AM3(+), FM1 and FM2, the cooler is fully compatible with FM2+ out of the box and doesn’t require any modifications or upgrades.

Quels ventirads Noctua sont compatibles avec le LGA1150 ?

"Le système de fixation est identique sur l'ensemble des sockets LGA115x (LGA1150, LGA1155, LGA1156). Les ventirads suivants sont donc immédiatement compatibles avec le LGA1150 et ne nécessitent aucun accessoire ni mise à jour pour une utilisation sur cette plateforme : NH-C12P SE14, NH-C14, NH-D15, NH-D14, NH-L12, NH-L9i, NH-U14S, NH-U12S, NH-U12P SE2, NH-U9B SE2. Les modèles plus anciens ayant été modifiés via le kit NM-I3 sont par ailleurs directement utilisable avec le LGA1150 et ne nécessitent donc aucune mise à jour additionnelle.

Les ventirads suivants peuvent devenir compatibles avec le LGA1150 via l’utilisation du kit NM-i115x et bénéficient de l’offre de gratuité Noctua pour le kit : NH-C12P, NH-U12, NH-U12F, NH-U12P, NH-U12P SE1366, NH-U9, NH-U9F, NH-U9B.

Les ventirads suivants peuvent devenir compatibles avec LGA1150 via l’utilisation du kit NM-i115x mais ne bénéficient pas de l’offre de gratuité Noctua pour le kit : DX-Series Xeon coolers, NH-D14 SE2011.

Les ventirads suivants ne sont pas, pour des raisons mécaniques, compatibles avec le kit NM-i115x et ne peuvent jouir d’une compatibilité avec le LGA1150: Série DO, ventirads pour AMD Opteron et NH-L9a.

How big is the NH-U14S 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:

U14S

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

No. Square 140mm fans like the NF-A14 would cause compatibility issues in many configurations and use a hole spacing of 124.5mm. The cooler's fan clips are designed for 105mm hole spacing as used by round 140/150mm and square 120mm fans.

How can I determine which backplate revision I’ve got?

Please refer to following drawing for how to identify the different backplate revisions:

backplate revisions

Some mainboards pose compatibility problems with the first version of the NM-IBP2 backplate included with the cooler. Please verify to use a revision 1.5 or revision 2 backplate when installing the cooler on these mainboards. All coolers manufactured since April 2013 already include the new revision backplates. Owners of coolers with rev. 1 backplates can request a new backplate from Noctua’s customer service free of charge.

Can square 140mm fans be installed on this cooler?

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

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 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.

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.

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).

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.

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?

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.

Does the NF-A15 PWM that comes with Noctua coolers run at a different speed (1500rpm) than the retail model (1200rpm)?

Yes, the NF-A15 PWM bundled with our heatsinks is specified to run at 1500rpm (see cooler specifications for details) and the retail model is specified to run at 1200rpm (see fan specifications for details). The 1200rpm retail model is ideal for setting up push/pull configurations in combination with the coolers’ 1500rpm stock fan because the combination of the 1500 and 1200rpm models provides a better balance of performance and noise than the combination of two 1500rpm versions. On dual-tower coolers such as the NH-D15S, we recommend to run the 1500rpm version in the center and the 1200rpm version on the front. On single-tower coolers such as the NH-U14S, we recommend to run the 1500rpm version on the front and the 1200rpm version on the back of the cooler. The NA-YC1 y-cable supplied with the retail fan can be used in order to control both fans via one PWM fan header. In this case, both fans will scale individually according to the PWM duty cycle supplied by the motherboard, e.g. they will run at ~1500/1200 respectively at 100% duty cycle, ~750/600rpm at 50% duty cycle, etc. Both at 100% and lower speeds, the speed difference between the fans reduces resonance phenomena and thus helps to achieve the best balance of performance and noise.

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

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.

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



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.

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

Pourquoi le fond du refroidisseur Noctua n'est-il pas brillanté et poli ?

Etant donné que la plupart des enthousiastes d'ordinateurs personnels utilise encore aujourd'hui des pâtes thermiques à forte viscosité, le fond du refroidisseur Noctua a été optimisé pour l'utilisation de ces pâtes. Les fines rainures (micro-grooves) dans la surface du fond du refroidisseur Noctua permettent d'appliquer les pâtes thermiques à forte viscosité de manière homogène en une couche ultramince et sans aucune inclusion d'air n'existe entre le refroidisseur et la processeur central. Le risque d'une application non homogène serait beaucoup plus élevé si la surface était brillantée et polie. Des couches de pâte thermique trop épaisses et des inclusions d'air altérant sensiblement la transmission calorifique, les micro-rainures sont d'une importance décisive pour la performance de refroidissement totale du refroidisseur Noctua en cas d'utilisation des pâtes thermiques courantes à forte viscosité.

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