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Your cart is empty.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.
Ward Dorrity
2025-09-05 16:03:23
This unit arrived extraordinarily well packed by today's standards. Very sturdy and well-cut cardboard packing as opposed to the flimsy Chinese stuff we usually get. Even the directions were clearly printed on premium stock. The unit was accompanied by a quality bondhus wrench for slipping down between holes cut in the cooling fins and used to tighten the mounting screws. Also included was a tube of thermal conducting paste in an injector format. Installation was a matter of applying the thermal paste and settling the cooling tower over the CPU and ensuring that the screws were properly located. The bondhs head wrench was a neat touch, as it made engaging the screws a cinch. A small detail that really pays off.Operation is flawless and reasonably quiet. Noctua even included instructions and hardware for mounting a second fan should that prove necessary. All of the forethought, detail and quality that went into this product makes it a clear standout among other similar products. Highly recommended.
Feshy
2025-07-30 12:28:24
There aren't a lot of options for 3U CPU coolers that don't sound like a jet engine. I personally would have preferred to cheap out a little, especially since I needed two - but there just aren't any cheaper options that come close to this performance and noise level (at least, none I was able to find.) And having bought these, I have no regrets - you definitely get what you pay for.If you have a 3U case, this is the heat sink you want. Even with the fan at 100%, it's quieter than the enterprise case fans I have at their lowest setting. My old heat sinks - with their frustrating shroud to funnel the air from the case fans - would let the CPUs get to the high 70's (°C) while sounding like the case was taxing down a runway.With these, the temperature on the back CPU - which has the front one blowing directly on it - still didn't crack 60 °C at full load, while making less noise than the already quiet computer next to it. At idle, don't even worry about it - temperatures are only a few degrees above room temp.The only flaw in the design that I can see is that it is possible - just barely, if you are extremely bone-headed - to mount the heat sink with the plastic protector still in place. The manual is very clear about not doing this, and it's a real struggle to do. You'll definitely get the impression that something isn't fitting right - but if you happen to ignore all that, you can actually mount it that way. To Noctua's credit, if you happen to do so, and happen to have done so in a case with insanely powerful fans that can ramp up to 9k rpm and somehow manage to keep the CPU just short of shutting itself down despite the plastic trapping most of the heat - the plastic won't melt. So at least I didn't have that mess to clean up.Clearly that was my fault, but maybe in the future the plastic shroud could extend to block the mounting screws - just in case someone as stubbornly incautious as me gets hold of one of these. Or maybe a sticker on the HSF itself, so that once you've put the instructions down and forgotten all the warnings, you are still reminded.Overall great product - clear documentation, all the tools you need, fits in the size they said it would, and amazing functionality. Worth the price.
pn
2025-07-20 12:44:00
This is my second set of Noctua coolers. Outstanding quality and performance. I installed them on Dell Precision T5610 and the temperatures are 15C lower than the stock coolers. It exceeded my expectations. With the stock coolers, CPU2 was always 5-10C hotter than CPU1. This is due to the motherboard design and airflow. Although CPU2 being hotter than CPU1 is perfectly normal I find 10C (sometimes even more) temperature difference a little bit too much for my liking. With these Noctua coolers CPU2 is only 2-4C hotter than CPU1 which is fantastic.Now regarding the mounting. I had a very hard time mounting these coolers on my Dell Precision T5610. But that was Dell's fault. In contrast I have never had any issues mounting Noctua coolers on Supermicro motherboards. Let me explain. When you place the heatsink on top of the CPU it is impossible to screw the bolts into the nuts which sit bellow the motherboard. Either the bolts are too short or the springs on the bolts are too long. The nuts simply sit much deeper than on any other motherboard. Obviously I cannot make the bolts longer, so naturally I decided to make the springs shorter. I squeezed them to the maximum with pliers a few times and they did shrink a little bit. But that was not enough. Then I decided to sand them and/or cut them. Not having a dremel or any power tools made this task impossible since the springs are made out of spring steel - super tough. At that point it was obvious that I should get rid of them and fill the gap with something else. So, I went to HomeDepot and picked a lot of #10 zinc washers in order to use them as spacers. After some trial and error I discovered that 7 washers deliver the perfect height - the bolt can easily reach the nut and when tightened everything is very snug. So this is my final solution, folks. I am extremely happy with the result. My workstation sits right next to me and extremely quietly and without any hesitation runs a ton of VMs.
Dan
2025-07-10 11:53:09
Right out of the gate, these heat sinks are awesome. I bought two for my dual socket build.I left the fan unplugged for almost a half hour during Windows installation, and this thing only let my Xeon get to around 48C. They soak a LOT of heat for being so small. They will get hot, but I can imagine running them semi passive or completely passive with the right processor choice.Instructions state you must remove the fan in order to install them; I did not, and it did not make a difference. That being said, two turns of the screws was plenty enough to install them. Very easy, and feels planted in place once installed. They’re actually pretty heavy for being so small, too, which probably means the pipes are solid, not hollow.That being said, considering it saved my processor, I will definitely revisit these if I build any other 2011-V3 computers in the future. Worth the money for sure. You can’t go wrong with these.
George
2025-06-25 19:37:23
Used to replace the Dell cooler on a W-2145 chip - noticeably more effective and much much quieter
De Vos
2025-06-10 12:39:53
I installed this cpu cooler in my Lenovo Thinkstation P520 which went very easy.It's a pricy cooler but is so much quieter than my stock cooler and my cpu temperature is much lower.
Pedro
2025-04-19 13:50:14
Mantiene mi Intel Core i7 4960X entre 25 y 50 ºC sin ningún problema. Y con un tamaño menor que algunas monstruosidades que se venden por ahÃ.
Konrad Moritz
2025-04-09 15:01:41
Der Kühler ist mit einer Xeon E5-2680 v4-CPU (120W TDP) bei guter Gehäuseentlüftung selbst bei Volllast und geschlossenem Gehäuse nicht zu hören. Die CPU-Temperatur bei 100%-Last auf 14-Kernen beträgt max. 60 °C und bei Leerlauf 35 °C. Ideal geeignet für flache HTPC-Gehäuse. Wer also noch Systeme mit LGA20xx-Sockel betreibt ist hier bestens bedient. Das Zubehör ist vollständig und kommt inkl. einer guten Wärmeleitpaste.
ZodiaKruZ
2025-02-20 19:07:07
I have had many coolers over the years, some good, some not so good, some easy to install, and some not. This was my first cooler of this style, so I was in new territory installing it. The manufacturer supplied excellent instructions and the installation was a breeze. So how did it perform? Much better than I expected. This style of cooler does the job very, very well, is super quiet and I never have to be concerned with it. Usually I have to keep tabs on the heat of the CPU, but not with this one. That kind of reliance makes computer use an excellent task without concerns. It was $69 and was well worth it.
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