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Continuing Noctua's tradition of supplying customers with its premium-class SecuFirm2™ mountings free of charge, the NM-i115x kit allows Noctua users to upgrade their coolers to Intel's LGA115x sockets (LGA1150, LGA1151, LGA1155, LGA1156). The NM-i115x set is backwards compatible with most Noctua coolers since 2005* and has been designed to combine outstanding reliability, optimal contact pressure and easy, straightforward installation. Bringing the trusted SecuFirm2™ quality to Intel's LGA115x platform, the NM-i115x is an enthusiast-grade mounting kit that meets the highest demands in safety, performance and ease-of-use.

Owners of Noctua CPU coolers* can obtain the NM-i115x 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 LGA115x mainboard or socket LGA115x CPU are required.

The NM-i115x 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.

*See this FAQ for detailed compatibility information. 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-L9 series low profile coolers and DO series AMD Opteron coolers.
Details
Trusted SecuFirm2™ Quality

Trusted SecuFirm2™ Quality

Over the years, SecuFirm2™ has become synonymous with impeccable long-term stability and flawless craftsmanship. Enthusiast users and industry clients alike trust the time-tested quality of Noctua's professional mounting systems.
Perfect Contact Pressure

Perfect Contact Pressure

SecuFirm2™ mounting systems use high-grade coil springs to achieve perfect contact pressure. No guesswork regarding how far to tighten the mounting screws, no risk of damaging the socket with excessive pressure!
Integrated Fastening Brackets

Integrated Fastening Brackets

Noctuas SecuFirm2™ systems feature fully integrated fastening brackets with pre-fixed pressure screws and springs, which greatly facilitates the installation process. No fiddling with loose screws and springs!
Tailor made for LGA115x

Tailor made for LGA115x

In order to cut costs, many manufacturers use cross-platform parts for both Intel and AMD, which can cause compatibility issues. Noctua's NM-i115x kit has been tailor-made for LGA115x and strictly complies to the Intel keep-out zones in order to ensure 100% compatibility.
One-piece backplate with fixed struts

One-piece backplate with fixed struts

The NM-i115x kit features a new, sturdy one-piece backplate with fixed struts that has been specifically designed to facilitate installation on LGA115x sockets. Due to the fixed struts, it's now even easier to align the backplate and to attach it to your mainboard.
Backwards Compatibility

Backwards Compatibility

The NM-i115x SecuFirm2™ kit is fully backwards compatible with most Noctua coolers since 2005*, making them safe long-term investments that can be used for several CPU generations.
NM-i115x Mounting-Kit
General
Notes and warnings
Owners of Noctua CPU coolers* can obtain the NM-i115x 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 LGA115x mainboard or socket LGA115x CPU are required.

The NM-i115x 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.

*See this FAQ for detailed compatibility information. 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-L9 series low profile coolers and DO series AMD Opteron coolers.
Kit Specification
LGA1150, LGA1151, LGA1155, LGA1156
Cooler compatibility
See this FAQ for detailed compatibility information.
NM-i115x Mounting-Kit
21.06.2013 // The Overclock Hole
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NM-i115x Mounting-Kit Review

Il cambio del kit di ritenzione chiedo non più di 2 minuti, e sarà sufficiente stringere 4 o 5 viti. E’ necessario rimuovere il braccio di ritenzione posto sulla base, che è mantenuto in posizione da una solta vite, raggiungibile mediante un cacciavite abbastanza lungo, attraverso un foro che percorre l’intero dissipatore.
Test verdict: "Questo kit di ritenzione, che lo ricordiamo viene spedito in modo del tutto gratuito agli acquirenti dei dissipatori NH-U12S ed NH-U14S, risolve brillantemente il problema, si presenta in modo eccellente, e garantisce piena compatibilità con qualsiasi scheda madre in circolazione. La procedura di sostituzione del supporto, e di installazione del nuovo, è molto semplice e veloce, richiede non più di 2 minuti, e praticamente nessuna abilità manuale, un plauso a Noctua." (Vincenzo Fiorenza, The Overclock Hole)

Installation Manual (PDF)

Information Sheet (PDF)

Which Noctua coolers are compatible with LGA1150?

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

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

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

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

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.

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.

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