Product discontinued. Successor model: NH-U9DO A3

Based on Noctua's compact NH-U9 series and fitted with the award-winning NF-B9 fan and NT-H1 thermal compound, the NH-U9DO forms a complete premium quality package that provides excellent quiet cooling performance for 4U Opteron workstations and servers. The NH-U9DO's SecuFirm™ mounting system is fully compatible with the standard backplate and makes the NH-U9DO a simple drop-in replacement for AMD stock coolers.

Caution: Please note that the cooler isn't compatible with socket G34.

If you're interested in using our coolers on AMD Opteron platforms, please don't hesitate to contact us at sales@noctua.at! Bundles can be customized for system integrators.
Can be turned by 90° for optimal compatibility and positioning

Can be turned by 90° for optimal compatibility and positioning

The NH-U9DO can be installed rotated by 90° to allow for an optimal positioning of the cooler and to evade compatibility issues on dual socket mainboards.
Drop-in replacement for standard AMD coolers

Drop-in replacement for standard AMD coolers

The NH-U9DO's SecuFirm™ mounting system screws directly to the standard Socket F backplate in order to facilitate the installation process.
NF-B9 92mm premium fan

NF-B9 92mm premium fan

Featuring psychoacoustic optimizations and Noctua's premium-grade SSO-bearing, the award-winning NF-B9 is renowned for its exceptional quietness and long-term stability.
NT-H1 thermal compound

NT-H1 thermal compound

Noctua's much-acclaimed NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance, excellent ease-of-use and outstanding reliability.
Cooler Specifications
Sockel K8 (754, 939, 940) & Sockel F (if the hole spacing is 88.9mm)
Height (without fan)
122 mm
Width (without fan)
96 mm
Depth (without fan)
65 mm
Height (with fan)
122 mm
Width (with fan)
96 mm
Depth (with fan)
90 mm
Weight (without fan)
500 g
Weight (with fan/s)
590 g
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Fan compatibility
92x92x25 (2 fans can be installed)
Scope of Delivery
  • 1x NH-U9DO heatsink
  • 1x NF-B9 fan
  • Mounting-clips for 2 fans
  • Ultra-Low-Noise-Adaptor (U.L.N.A.)
  • Low-Noise-Adaptor (L.N.A.)
  • NT-H1 thermal compound
  • SecuFirm™ mounting kit for Socket F
6 Years
FAN Specification
Rotational Speed (+/- 10%)
1600 RPM
Rotational Speed with L.N.A. (+/- 10%)
1300 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
1000 RPM
64,3 m³/h
Airflow with L.N.A.
52,6 m³/h
Airflow with U.L.N.A.
41,1 m³/h
Acoustical Noise
17,6 dB(A)
Acoustical Noise with L.N.A.
13,1 dB(A)
Acoustical Noise with U.L.N.A.
7,9* dB(A)
Input Power
1,32 W
Voltage Range
12 V
> 150.000 h
30.06.2010 // PC Helpforum

NH-U9DO Review

We zijn uitgekomen bij de montage. Deze ging er gemakkelijk, een van de gemakkelijkste manier van monteren kan ik eigenlijk zelf wel stellen. Dit is vanwege de gebruikte manier van monteren, simpelweg met schroeven in de backplate. Hierdoor zit de CPU ook veel beter vast dan bij de normale manier van monteren. Deze manier komen we tegenwoordig ook steeds vaker tegen op de wat grotere koelers van tegenwoordig.
Test verdict: "Ik moet zeggen dat ik deze koelers erg prettig vind om mee te werken. Ze zijn getest op 2 moederborden, zowel de Asus KFSN4 DRE/SAS als een MSI Speedster 1 en ze zaten perfect. Tevens is de prestatie goed te noemen, hoewel ze hier op processoren zijn gebruikt die een laag verbruik hebben, hebben ze deze goed koel weten te houden." (Yannick de Koeijer, PC Helpforum)

Installation Manual (PDF)

How can I check whether my case is wide/high enough for the cooler?

In order to check whether the cooler isn’t too high for your case, please measure the distance from the motherboard tray to the side panel (tower cases) or top panel (desktop cases). If this distance is bigger than the height of the cooler + 15mm (mainboard spacers + mainboard + CPU), the height/width of your case should be sufficient.

I get a CPU fan error despite the fan is running!

Some mainboards display a CPU fan error when the fan speed falls below a certain threshold, e.g. 900rpm. If you want to run the fan below this speed (e.g. using the supplied U.L.N.A.), please adjust the threshold in the BIOS or disable CPU fan error warning.

Which Noctua coolers are compatible with LGA1150?

The mounting is identical on all LGA115x sockets (LGA1150, LGA1155, LGA1156). The following coolers are thus compatible with LGA1150 out of the box and don’t require any upgrades in order to be used on this platform: NH-C12P SE14, NH-C14, NH-D15, NH-D14, NH-L12, NH-L9i, NH-U14S, NH-U12S, NH-U12P SE2, NH-U9B SE2. In addition, all older models which have been upgraded with the NM-I3 kit can also be used on LGA1150 without any further upgrades.

The following coolers can be made compatible to LGA1150 using the NM-i115x Upgrade-Kit and are eligible for Noctua’s free mounting kit offer: NH-C12P, NH-U12, NH-U12F, NH-U12P, NH-U12P SE1366, NH-U9, NH-U9F, NH-U9B.

The following coolers can be made compatible to LGA1150 using the NM-i115x Upgrade-Kit but are not eligible for Noctua’s free mounting kit offer: DX-Series Xeon coolers, NH-D14 SE2011.

The following coolers are mechanically incompatible with the NM-i115x Upgrade-Kit and can not be made compatible with LGA1150: DO-Series AMD Opteron coolers, NH-L9a.

Which sockets are supported or can be supported using upgrade kits?

Please refer to our socket compatibility chart.

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