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!
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 heat spreaders or optional memory fans.
The NF-A9 92mm fan supplied with the NH-D9DX i4 supports PWM for convenient automatic speed control through the mainboard. And, the maximum fan speed can be reduced from 2000 to 1550rpm using the supplied Low-Noise Adaptor for even quieter operation
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.
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Customer Reviews
T.C.
I thought Noctuas were overrated brand, until I tried one for myself. You're not paying for just another silent fan and cooler, the extra cost is going towards quality which equates to not wasting time dealing with lesser products. This thing is whisper quiet...
Moeller
Wow. I can't believe the difference. These fans are excellent. Anyone can replace these CPU cooler fans. The packaging and instructions were spot on. They even include all parts needed; even the thermal paste. My 72 tb nas now hasAll Noctura fans. So quiet.