Based on Noctua's signature NH-U12 series and fitted with the award-winning NF-P12 fan and NT-H1 thermal compound, the NH-U12DX 1366 forms a complete premium quality package that provides outstanding quiet cooling performance for Intel's LGA1366 Xeon 5500/5600 CPUs. The new SecuFirm2™ mounting system for LGA1366 is highly convenient and makes the NH-U12DX 1366 a tailor-made drop-in replacement for standard Intel coolers. To make your Xeon 5500/5600 systems quieter has never been so easy!
Caution: The NH-U12DX 1366 can only be used on mainboards that have a backplate with screw threads for CPU cooler installation (such as the Intel reference backplate for Xeon 5500). The cooler is thus incompatible with Xeon 3500 and Core i7 mainboards that don't have such a backplate. Please choose our NH-U12P SE1366 for these mainboards. Click here for further information.
Noctua NH-U12DX Quiet CPU Heat Sink Cooler.
Noctua NH-U12DX 1366 Features
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Drop-in replacement for standard Intel coolers
SecuFirm2™ for Socket LGA1366 is fully compatible with the original Intel installation system so that the NH-U12DX 1366 works as a simple drop-in replacement. |
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NF-P12 120mm premium fan
Featuring psychoacoustic optimizations and Noctua's premium-grade SSO-bearing, the award-winning NF-P12 is renowned for its exceptional quietness and long-term stability. |
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SecuFirm2™ for Socket LGA1366
Completely pre-installed, the new SecuFirm2™ mounting system ensures maximum convenience and extremely short installation time. |
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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. |
Noctua NH-U12DX Near Silent Heat Sink.
Noctua NH-U12DX 1366 Specification
| Noctua NH-U12DX 1366 Quiet CPU Cooler Specifications |
| Socket compatibility |
LGA1366 (backplate with screw threads for CPU cooler installation required) |
| Height (without fan) |
155 mm |
| Width (without fan) |
126 mm |
| Depth (without fan) |
65 mm |
| Height (with fan) |
155 mm |
| Width (with fan) |
126 mm |
| Depth (with fan) |
126 mm |
| Weight (without fan) |
600 g |
| Weight (with fan) |
770 g |
| Material |
Copper (base and heat-pipes), aluminum (cooling fins), soldered joints & nickel plating |
| Application |
Intel Xeon 55xx/56xx |
| Fan compatibility |
120x120x25 (2 fans can be installed) |
| Scope of Delivery |
- 1x NH-U12DX Heatsink
- 1x NF-P12 fan
- Mounting-clips for 2 fans
- Ultra-Low-Noise-Adaptor (U.L.N.A.)
- Low-Noise-Adaptor (L.N.A.)
- NT-H1 thermal compound
- SecuFirm2™ mounting kit for LGA1366
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| Warranty |
6 Years |
| Noctua NH-U12DX 1366 Quiet Fan specifications |
| Model |
Noctua NF-P12 |
| Bearing |
SSO-Bearing |
| Rotational Speed (+/- 10%) |
1300 RPM |
| Rotational Speed with L.N.A. (+/- 10%) |
1100 RPM |
| Rotational Speed with U.L.N.A. (+/- 10%) |
900 RPM |
| Airflow |
92.3 m³/h |
| Airflow with L.N.A. |
78.5 m³/h |
| Airflow with U.L.N.A. |
63.4 m³/h |
| Acoustical Noise |
19.8 dB(A) |
| Acoustical Noise with L.N.A. |
16.9 dB(A) |
| Acoustical Noise with U.L.N.A. |
12.6 dB(A) |
| Input Power |
1,08 W |
| Voltage Range |
12 V |
| MTBF |
150.000 h |
Additional Information
For FAQ's please visit Noctua’s website.
For compatibility please visit Noctua’s website.
For detailed installation instructions please visit Noctua’s website.
Caution: The NH-U12DX 1366 can only be used on mainboards that have a backplate with screw threads for CPU cooler installation (such as the Intel reference backplate for Xeon 5500). The cooler is thus incompatible with Xeon 3500 and Core i7 mainboards that don't have such a backplate. Please choose our NH-U12P SE1366 for these mainboards. Click here for further information.