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Noctua's DX line of coolers has become a default choice in high performance quiet cooling solutions for Intel Xeon CPUs. The latest i4 revision supports LGA2011 (both Square ILM and Narrow ILM), LGA1356 and LGA1366 based Xeon platforms and the 12cm model NH-U12DX i4 comes equipped with Noctua’s award-winning NF-F12 Focused Flow™ fan with PWM for automatic speed control. Due to its slim design, the NH-U12DX i4 now provides easy access to the memory slots and better compatibility with tall modules. Fitted with the professional SecuFirm2™ mounting system and bundled with Noctua's industrial-grade NT-H1 thermal compound, the NH-U12DX i4 forms a complete premium quality package for quietly cooling Xeon based workstations and servers.

Details
Award-winning NH-U12 series

Award-winning NH-U12 series

The NH-U12DX i4 is based on the latest version of Noctua's award-winning NH-U12 coolers. First introduced in 2005, the NH-U series has become a standard choice for premium quality quiet CPU coolers and won more than 400 awards and recommendations from leading international hardware websites and magazines.
Easier access to RAM

Easier access to RAM

Thanks to its slim design with only 45mm fin depth, the NH-U12DX i4 ensures easy access to the RAM slots. When installed parallel to the slots, it will not overhang the memory on LGA1356, LGA1366 and LGA2011 Square ILM even with two fans installed, thus providing full compatibility with tall RAM heatsinks.
PWM support and Low-Noise Adaptor

PWM support and Low-Noise Adaptor

The NF-F12 120mm fan supplied with the NH-U12DX i4 supports PWM for convenient automatic speed control through the mainboard. In addition, the maximum fan speed can be reduced from 1500 to 1200rpm using the supplied Low-Noise Adaptor for even quieter operation.
Anti-vibration pads and fan-clips for second NF-F12 (optional)

Anti-vibration pads and fan-clips for second NF-F12 (optional)

For users who want to achieve even better performance by adding a second, optional NF-F12 fan to create a push/pull setup, the NH-U12DX i4 includes fan clips and an extra set of custom-designed anti-vibration pads that allow to off-set the rear fan by 5mm to improve acoustics in dual-fan mode.
SecuFirm2™ mounting system

SecuFirm2™ mounting system

Noctua's SecuFirm2™ mounting systems have become synonymous with quality, safety and ease of use. Supporting Intel's LGA2011 (both Square and Narrow ILM), LGA1356 and LGA1366 Xeon platforms, the SecuFirm2™ mounting included with the NH-U12DX i4 guarantees perfect contact pressure and maximum convenience on all sockets.
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-F12 features an MTBF rating of more than 150.000 hours and the entire NH-U12DX i4 package comes with a full 6-year manufacturer's warranty.
NH-U12DX i4
Cooler Specification
Intel LGA2011-0 & LGA2011-3 (Square ILM & Narrow ILM), LGA1356, LGA1366 (wtih Xeon backplate)
Height (without fan)
158 mm
Width (without fan)
125 mm
Depth (without fan)
45 mm
Height (with fan)
158 mm
Width (with fan)
125 mm
Depth (with fan)
71 mm
Weight (without fan)
580 g
Weight (with fan/s)
755 g
Material
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Fan compatibility
120x120x25
Scope of Delivery
  • NF-F12 PWM premium fan
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kit
  • Anti-vibration pads and fan-clips for second NF-F12
Warranty
6 Years
FAN Specification
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
22,4 dB(A)
Max. Acoustical Noise with L.N.A.
18,6 dB(A)
Voltage Range
12 V
MTTF
> 150.000 h
NH-U12DX i4
07.09.2016 // ITNdaily.ru
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NH-U12DX i4 Review

Noctua NH-U12DX i4 лишен недостатков. Кулер прост в установке (процесс монтажа занимает меньше времени, чем в случае с любым универсальным продуктом от австрийского производителя), он дешевле мейнстрим СО, ориентированных на большее кол-во совместимых разъемов.
Test verdict: "Noctua NH-U12DX i4 еще и достаточно компактный и производительный. Профессиональное решение предлагает профессиональный подход, так и должно быть. Рекомендуем." (Евгений Никифоров, ITNdaily.ru)
22.08.2016 // Turkchip.com
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NH-U12DX i4 Review

Noctua işlemci soğutucuları ısı değerlerine göz attığımızda boyutlarına göre performans gösterdiklerini görüyoruz. Özellikle Noctua U12DX i4 testleri liderlikle bitirirken, D9DX ise testleri 3.üncü sırada bitirdi. Özellikle Noctua U12DX i4 işlemci soğutucusu işlemcimizi overclock yaptığımızda daha iyi performans gösterirken Thermalright Macho Zero ile başa baş sonuçlara imza atıyor.
Test verdict: "Noctua NH-U12DX i4 ve NH-D9DX i4 3U işlemci soğutucuları fiyat/performans olarak oldukça başarılı. Sunduğu bir çok özelliği, zengin kutu içeriği ile sunucu/workstationlara yeni bir çözüm getirirken Turkchip Golden Award ödülünü de hak ediyor." (Murat Yildirim, Turkchip.com)
05.02.2016 // PC Ekspert
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NH-U12DX i4 Review

Kod overclockinga nismo koristili low noise adaptere nego smo mjerenja samo izvršili pri punim brzinama ventilatora. Rezultat nije nimalo loš kada je u pitanju veći U12DX hladnjak koji očito bolje funkcionira pod većim opterećenjem jer je ovdje za 3°C bolji od i32. U9DX s oba ventilatora i u punoj brzini drži procesor na iznimno vrućih maksimalno zabilježenih 95°C. Prosjek maksimalnih temperatura za U12DX iznosi 83.13°C, za U9DX 87.1°C, za i32 86.5°C i za D15 80.33°C. Maksimalna potrošnja sistema je iznosila 275 W.
Test verdict: "Noctua već neko vrijeme vješto koristi svoje umijeće i postojeće desktop modele kako bi proširili tržište i na workstation/server segment. Dokaz tome su i ova dva modela, koji su poznate Noctuine premium kvalitete, jednostavnog načina montaže ali i dobrih performansi." (Krešimir Matanović, PC Ekspert)
02.06.2014 // GreenTechReviews.ru
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NH-U12DX i4 Review

Noctua NH-U12DX i4 продемонстрировал впечатляющие результаты и даже в абсолютно бесшумном режиме обошёл стандартные решения более, чем на 20 градусов! Кулер сочетает в себе исключительно лучшие качества и полностью оправдывает свою цену.
Test verdict: "Если остро стоит вопрос о смене штатных шумных кулеров на что-то более эффективное и тихое, то Noctua NH-U12DX i4 вне конкуренции!" (Владимир Солонин, GreenTechReviews.ru)
02.03.2014 // XtremeSystems.org
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NH-U12DX i4 Review

Mind you that i included Liquid Cooling solutions(in the same price range) as well.None of the coolers obviously have any issue whatsoever in IDLE with the Intel Xeon E5-2687W not overclocked.The Noctua NH-U12DX i4 managed to outperform the Liquid Cooling solutions in load mode. Overall fine results.
Test verdict: "Even in single fan mode, the NH-U12DX i4 performs extremely well." (Ambrosidou Nat, XtremeSystems.org)
28.05.2013 // mod-your-case.de
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NH-U12DX i4 Review

Noctua zeigt mit dem NH-U12DX i4 eindeutig, das Server und Workstations nicht laut sein müssen, um mit einem kühlen Kopf agieren zu können. Der NH-U12DX i4 setzt sich um Längen vor den BXSTS200C Kühler von Intel. Jedoch ist mit dem Noctua Kühler kein Betrieb in einem 2HE Server mehr möglich. Bei einem Einsatz in Workstation, welche meist in einem Desktop ähnlichen Case verbaut sind, kann der Kühler jedoch zeigen, was in ihm steckt.
Test verdict: "Kommt ein passendes Gehäuse zum Einsatz, so ist der NH-U12DX i4 eine echte Alternative zu dem von Intel angebotenen Kühler. Der NH-U12DX i4 bietet nicht nur eine höhere Kühlleistung, sondern ermöglicht auch einen sehr ruhigen Betrieb der Workstation, welcher für ein angenehmes Arbeiten notwendig ist. Die Montage des Kühlers ist zudem schnell und einfach zu bewerkstelligen." (Patrick Seus, mod-your-case.de)

Installation Manual (PDF)

Information Sheet (PDF)

Is the cooler compatible with all LGA1366 mainboards?

The DX models (NH-U12DX i4, NH-U9DX i4, NH-U12DX 1366, NH-U9DX 1366) can only be used on mainboards that have a backplate with screw threads for CPU cooler installation (such as the Intel reference backplate for Xeon 5500). The cooler is thus incompatible with Xeon 3500 and Core i7 mainboards that don’t have such a backplate. Please choose our normal retail models with LGA1366 support (or NM-I3 kit) for these mainboards.

1366 compatibility

Can Noctua coolers be installed on LGA2011 Narrow ILM platforms?

The NH-U12DX i4 and NH-U9DX i4 include mounting hardware for LGA2011 Narrow ILM. Other models are mechanically incompatible with the Narrow ILM mounting system and can thus not be used on this platform.

Can the cooler be used in 4U cases?

Common 4U cases usually don’t provide sufficient clearance for tower coolers with 120mm fans and 158mm height. Please thus carefully check whether your case provides sufficient clearance or choose the 9cm variant, which is fully compatible with common 4U cases.

Does the mounting-system of the NH-U12DX i4/NH-D9DX i4 3U/NH-U9DX i4 support LGA2011 based Xeon platforms with Narrow ILM?

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 mounting system of the NH-U12DX i4/NH-D9DX i4 3U/NH-U9DX i4 is fully compatible with both types:

Xeon Compatibility

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.

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