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Feature

While most low-profile coolers blow air towards the motherboard, NH-D9L is a tower style cooler that bows parallel to the mainboard, which allows superior airflow efficiency in cases with front intake and rear exhaust fans
Whereas classic 9cm coolers with up to 125mm height fit 4U rack mount cases, the NH-D9L's reduced height of 110mm allows it to also fit 3U chassis. This makes it ideal for noise-sensitive 3U applications in fields such as audio or video processing.
With its 95x95mm footprint, the NH-D9L does not overhang the RAM slots on current Intel and most AMD mainboards. This gives the user full access to the memory modules and guarantees 100% compatibility with tall heat spreaders or optional memory fans
The NF-A9 92mm fan supplied with the NH-D9L supports PWM for convenient automatic speed control through the mainboard. In addition, the maximum fan speed can be reduced from 2000 to 1550rpm using the supplied Low-Noise Adaptor for even quieter operation
While larger coolers that exceed 95x95mm socket zone are likely to block the PCIe slot, the 95x95xmm sized NH-D9L provides full compatibility with PCIe cards, be it on ATX, micro ATX or ITX
The NH-D9L 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, Voltage Range for Fan: 12 V, Max. Rotational Speed with L.N.A. (+/- 10%): 1550 RPM
Supporting Intel LGA115x (LGA1150,LGA1155,LGA1156), LGA2011 (LGA2011-0 & LGA2011-3) and AMD (AM2+,AM3,AM3+,FM1,FM2,FM2+), the SecuFirm2 mounting included with the NH-D9L guarantees perfect contact pressure and maximum convenience on all current sockets

Description

The NH-D9L is a premium grade dual tower CPU cooler that has been designed to provide excellent quiet cooling performance at a height of only 110mm. Its comparably low profile (15mm lower than classic 9cm tower coolers such as the NH-U9S) doesn't only guarantee full 3U compliance but also makes the NH-D9L ideal for compact HTPC and Small Form Factor cases that have airflow paths parallel to the mainboard. Thanks to its 95x95mm footprint, the NH-D9L clears the RAM and PCIe slots on all Intel based and most AMD based ITX mainboards. The included NF-A9 premium fan supports automatic speed control via PWM for outstanding quietness of operation and a second, optional NF-A9 fan can be added for further improved performance in dual fan mode. Topped off with the trusted, pro-grade SecuFirm2 multi-socket mounting system, Noctua's proven NT-H1 thermal compound and full 6 years manufacturer's warranty, the NH-D9L forms a highly compact premium package for space-restricted applications.