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The NM-I3 SecuFirm2™ Mounting-Kit makes all Noctua CPU coolers compatible with Intel's LGA775 & LGA1366 sockets for Core i5 and Core i7 processors. Designed to combine outstanding reliability, optimal contact pressure and easy, straightforward installation, SecuFirm2™ is an enthusiast-grade mounting system that meets the highest demands in safety, performance and ease-of-use.

 Please use the new NM-i115x kit for upgrading older heatsinks to LGA1150, LGA1151, LGA1155 or LGA1156. The NM-I3 kit is now only available to provide LGA775 and LGA1366 support.

Owners of Noctua CPU coolers* can obtain the NM-I3 Mounting-Kit free of charge via this form. A proof of purchase (photo, scan or screenshot of the invoice) of both a Noctua CPU cooler and either a socket 775/1366 mainboard or socket 775/1366 CPU are required.

The NM-I3 SecuFirm2™ Mounting-Kit is also available for purchase at some of our resellers. If you need the kit urgently, please consider ordering it via a local reseller.

*The kit can not be provided free of charge for the NH-D14 SE2011 (special edition for LGA2011 only) as well as for DX series Intel Xeon coolers. If you would like to use the kit with these coolers, please purchase it a local reseller. Also note that this kit is not compatible with the NH-L9i & NH-L9a low profile coolers and DO series AMD Opteron coolers.
Details
Ultimate Reliability

Ultimate Reliability

Noctua's SecuFirm™ mounting systems are renowned for their excellent reliability, minimize the stress on mainboards and make it possible to transport the system without uninstalling the CPU cooler. With tens of thousands of units sold, there's not a single known case of failure.
Backplate with Screw-Threads

Backplate with Screw-Threads

SecuFirm2™ utilizes a backplate with screw-threads that simply installs on top of the stock LGA1366/LGA1156/LGA1155 backplate. Not having to remove the stock backplate significantly reduces overall installation time and eliminates the risk of damaging the CPU socket. Thanks to the screw threads, the backplate can't slip during the installation process.
Integrated Fastening Brackets

Integrated Fastening Brackets

Fully integrated fastening brackets with fixed pressure screws and springs greatly facilitate the installation process. No more fiddling with screws and springs!
Maximum Convenience for Enthusiasts

Maximum Convenience for Enthusiasts

Thanks to the use of separate mounting bars, uninstalling and reinstalling the cooler only takes two screws. Loosening two thumbscrews gives full access to the socket without the backplate falling off, making it a child's play to change CPUs even if the mainboard is installed inside a case.
Backwards Compatibility

Backwards Compatibility

SecuFirm2™ is fully backwards compatible with all Noctua coolers since 2005, making them safe long-term investments that can be used for several CPU generations.
NM-I3 Mounting-Kit
Kit Specification
LGA1366, LGA775
Supported CPU series
Intel Core i5 & Core i7
Cooler compatibility
Noctua NH-C12P, NH-D14 SE2011, NH-U12P, NH-U12P SE1366, NH-U9B, NH-U12F, NH-U9F, NH-U12, NH-U9
NM-I3 Mounting-Kit
23.02.2013 // DV Hardware
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NM-I3 Mounting-Kit Review

The Good Stuff:
- It's free
- Makes all Noctua coolers compatible with Intel LGA1366/1155/1156 CPUs.
- Easy to install

The Bad Stuff:
- None.
Test verdict: "The NM-I3 is a big gift of Noctua to its customers, this mounting kit easily extends the life of your old Noctua HSF by several years. Noctua's SecuFirm is not only easy to install but also has excellent reliability and amazing backwards compatibility. Best of all, they ship the NM-I3 to you for free!" (Thomas De Maesschalck, DV Hardware)
13.01.2013 // DragonSteelMods.com
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NM-I3 Mounting-Kit Review

The Noctua NM-I3 Mounting Kit can bring new life to your old and aging Noctua coolers and make them useful once again. The kit is simple to use, just follow the instructions and you’ll be done in a mater of minutes really.
Test verdict: "Technology moves fast and not everyone including companies can keep up, but Noctua wants to make sure their older coolers can still be useful with new CPU sockets. I think this is admirable, I don’t know of many companies that would support products that are no longer even produced. Most companies would be more than happy to just sell you a new cooler for that new socket style that just came out, but Noctua wants to make sure you can still use the cooler you bought for the last generation socket on the new socket. It’s nice to see them doing this, they didn’t have to, it just goes to show that Noctua is a company that will go above and beyond for their customers." (Kristofer Brozio, DragonSteelMods.com)
28.04.2012 // islaBit.com
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NM-I3 Mounting-Kit Review

El kit de montaje NOCTUA NM-I3 SecuFirm2 está Recomendado por islaBit obviamente para los disipadores de Noctua que no traigan tal kit como accesorios de montaje, como es el caso del disipador Noctua NH-D14 SE2011. Es la única alternativa para montar estos disipadores en tal caso. Resulta un kit muy seguro que garantizará el soporte sin percances de un peso mayor al kilogramo y medio, siendo capaz de aguantar el peso del disipador NH-D14 SE2011 (1240g) junto con otro ventilador adicional NF-P12 PWM (170g) (3 ventiladores montados sobre el mismo disipador, 1410g), que es la configuración que hemos estado probando con el procesador de Intel Core i5 2500k sobre la placa base Gigabyte GA-Z68X-UD5-B3 y que actualmente conservamos en nuestro laboratorio.
Test verdict: "Por último, este kit se lleva el Premio Diseño islaBit, no solo por poder soportar mucho peso (que quedará determinado a lo que soporte la plancha de circuito impreso de la placa base), sino también por ser compatible con la mayoría de sockets de Intel, a la vez que permite el giro de 90º del disipador, a diferencia que el diseño de los sockets de AMD (aunque aquí quizá el mérito se lo lleve Intel). Kits de montaje de múltiples fabricantes hay ha montones, pero éste es uno de los más simples, seguros y resistentes que hemos tenido el placer de montar." (Raúl Planelles, islaBit.com)
13.12.2010 // Recensionivere.com
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NM-I3 Mounting-Kit Review

Nota per la qualità dei dissipatori e delle ventole prodotte, oltre che per il triplice rapporto prestazioni-silenziosità-prezzo, Noctua è così sicura dei suoi prodotti da applicare una garanzia di ben sei anni.
Test verdict: "Sempre in grado di offrire risposte veloci e dettagliate attraverso il sistema di ticketing online, ha dimostrato di non dimenticarsi dei clienti acquisiti, scegliendo di fornire loro - gratuitamente - i kit di montaggio per i nuovi socket. Cioè gli stessi kit che altre aziende vendono separatamente o non distribuiscono costringendoci a comprare un dissipatore nuovo." (Ivan Scalise, Recensionivere.com)
07.11.2009 // HiTechLegion.com
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NM-I3 Mounting-Kit Review

I tried the NM-I3 Mounting kit on all three different Intel sockets it’s compatible with and everything lined up fine. There was no need to make any adjustments because screw holes or connection points were misaligned.
Test verdict: "It is nice to see that a heatsink manufacturer sticks behind their product. Performance heatsinks are usually a sizable expense and to have to purchase another heatsink just because you upgraded your system can be frustrating." (Paul E. Marini, HiTechLegion.com)

Installation Manual (PDF)

Help, the base of the cooler doesn’t make contact with the CPU / there is no contact pressure!

Please verify that you have installed the fastening brackets correctly:

Fastening Brackets

Is the cooler compatible with LGA1366 mainboards for Xeon 5500?

Due to the custom NM-I3 backplate, the cooler can not be used on mainboards that have a backplate with screw threads for CPU cooler installation (such as the Intel reference backplate for Xeon 5500). Please choose our NH-U12DX 1366 for these mainboards.

1366 compatibility

My mainboard has more than one set of mounting holes. Which one should I use?

Please always use the standard set of mounting holes that's compliant with your socket type (e.g. 75mm LGA1156 hole spacing on LGA1156 sockets) and parallel to the sides of the socket. Don't use mounting holes which are rotated in relation to the socket.

1366 compatibility

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

Is the mounting system compatible with LGA1155?

Yes. LGA1155 uses the same hole spacing as LGA1156, so the same SecuFirm2™ mounting system can be used.

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