Noctua's DX line of coolers has become a default choice in high performance quiet cooling solutions for Intel Xeon CPUs. The i4 revision supports LGA2011 (both Square ILM and Narrow ILM), LGA1356 and LGA1366 based Xeon platforms and the new D9 model provides better performance and better compatibility than previous 9cm versions: Thanks to its 95x95mm footprint and reduced 110mm height, the NH-D9DX i4 is fully 3U compliant and clears the RAM slots on LGA2011 Square ILM and LGA13xx. At the same time, the dual tower design and the new NF-A9 PWM guarantee further improved quiet cooling performance. Fitted with the professional SecuFirm2™ mounting system and bundled with Noctua's industrial-grade NT-H1 thermal compound, the NH-D9DX i4 3U forms a complete premium quality package for quietly cooling Xeon based workstations and servers.
3U compatibility
The NH-D9DX i4 stands only 110mm tall. This is 15mm less than previous 4U compliant 9cm DX-line coolers and allows the NH-D9DX i4 to also fit 3U cases - ideal for noise-sensitive 3U applications in fields such as audio or video processing!
100% RAM compatibility
With its 95x95mm footprint, the NH-D9DX i4 does not overhang the RAM slots on LGA2011 Square ILM, LGA1366 and LGA1356. This gives the user full access to the memory modules and guarantees 100% compatibility with tall heatspreaders or optional memory fans.*
NF-A9 premium fan
The highly optimised features Noctua's proprietary AAO frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, which allows it to further improve the renowned efficiency of Noctua's previous 92mm models and contributes to the NH-D9DX i4' superior cooling performance.
PWM support and Low-Noise Adaptor
The NF-A9 92mm fan supplied with the NH-D9DX i4 supports PWM for convenient automatic speed control through the motherboard. In addition, the maximum fan speed can be reduced from 2000 to 1550rpm using the supplied Low-Noise Adaptor for even quieter operation.
Dual fan ready
The NH-D9DX i4 includes an extra set of fan mounting clips for users who want to achieve even better cooling performance by adding a second, optional NF-A9 to the front fin stack. Using the y-cable supplied with the NF-A9 PWM retail fan, both fans can be connected to one CPU fan header.
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), LGA2066, LGA1356 and LGA1366 Xeon platforms, the SecuFirm2™ mounting included with the NH-D9DX i4 guarantees perfect contact pressure and maximum convenience on all sockets.
NT-H1 thermal compound
Having received more than 100 awards and recommendations from hardware journalists around the world, Noctua's NT-H1 is a proven professional grade TIM solution that provides minimum thermal resistance, excellent ease of use and outstanding reliability.
6-year manufacturer’s warranty
Noctua products are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the supplied NF-A9 features an MTTF rating of more than 150.000 hours and the entire NH-D9DX i4 package comes with a full 6-year manufacturer’s warranty. More information: Power | Power consumption (typical) | 1.2 W |  | Voltage | 12 V | Weight & dimensions | Width | 95 mm | | Depth | 95 mm | | Height | 110 mm | | Weight | 531 g | | Fan dimensions (W x D x H) | 92 x 92 x 25 mm | | Package width | 115 mm | | Package depth | 118 mm | | Package height | 118 mm | | Package weight | 1198 g | Design | Product colour | Silver | | Number of fans | 1 fan(s) | Logistics data | Harmonized System (HS) code | 84733080 | Other features | Mean time to failure (MTTF) | 150000 h | Performance | Suitable location | Processor | | Type | Cooler | | Fan diameter | 92 mm | | Supported processor sockets | LGA 1356 (Socket B2), LGA 1366 (Socket B), LGA 2011 (Socket R), LGA 2011-v3 (Socket R) | | Compatible processor series | Intel® Xeon® | | Rotational speed (min) | 400 RPM | | Rotational speed (max) | 2000 RPM | | Rotational speed with LNA (max) | 1550 RPM | | Noise level (high speed) | 22.8 dB | | Noise level with LNA (max) | 16.3 dB | | Airflow | 78.9 m³/h | | Airflow with LNA (max) | 62.6 m³/h | | Pulse-width modulation (PWM) support | Yes | | Bearing type | Self-Stabilising Oil-pressure Bearing (SSO) |
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