Noctua NH-U12DX 1366 CPU Cooler for LGA 1366 Xeon

$ 68.95

Noctua NH-U12DX 1366 CPU Cooler for LGA 1366 Xeon

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 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 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 SE2 for these mainboards.

SecuFirm2™ for Socket LGA1366
Completely pre-installed, the new SecuFirm2™ mounting system ensures maximum convenience and extremely short installation time.

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.

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.

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.

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
Weight (without fan) 600 g

Height (with fan) 155 mm
Width (with fan) 126 mm
Depth (with fan) 90 mm
Weight (with fan) 770 g

Material Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating

Application Intel Xeon 55xx

Fan compatibility 120x120x25mm / 120x120x38mm (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.)
NT-H1 thermal compound
SecuFirm2™ mounting kits for LGA1366

Warranty 6 Years Manufacture

Fan specifications
Model Noctua NF-P12
Bearing SSO-Bearing
Blade geometry Nine Blade Design
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

Installation Manual from Manufacture (pdf)

This is a condensed version of our shipping and returns policy, to see all the details including our RMA form please go to either of the following links
Domestic Shipping Information (US and Canada)


*Most orders are processed within 24 hours and are checked frequently Monday - Friday. Orders that placed by 2:00PM PST are usually filled the same day. Some items may contain language with additional processing times. You will be contacted if any items you ordered are no longer in stock.

Shipping Times: UPS Map of Times in Transit Click here  First-Class mail can take 2-7 business days and Priority Mail usually takes 1-4 business days.
95%+ of our items ship out of our local warehouse near Seattle, occasionally we'll have to ship from Oregon, California or New Jersey.

Canadian Customers: There are two ways of shipping to Canada through our website.
First Class Package International & Priority Mail International.
Delivery times for Canadian orders can vary due to International restrictions and customs regulations. Most orders are delivered in 5-14 business days but can take longer (21-45 days) during heavy shipping seasons or in the event of a customs hold which is rare

Military: As a courtesy to our Military personal we will ship by US postal service to an APO, DPO or FPO address. Be advised that US Postal Costs on large orders can be more expensive then comparable UPS shipping. 

Will Call pickup: Purchase on line and select "Will Call" as the shipping method and we'll email you when it is ready for pickup (usually next day). 
Note: Not all our items are warehoused locally and available for Will Call, if there any items on your order not available we will contact you asap
Map to our location

Special Delivery Instructions: We cannot give any carrier specific information on where to put your packages or whether to hold/require or not require a signature, you must contact the carrier directly after you receive a tracking or confirmation number.

Tracking: Tracking information will be sent to you as soon as it is available, occasionally there is a 24-72 hour delay in sending tracking if any item(s) had to be shipped from an alternate location.
Note: Tracking numbers will be sent you through an automated e-mail system, the email you submit on your order is the email address you will receive your tracking number .

International Shipping

We offer shipping to a select number of International Countries using UPS and USPS, if you do not see your country listed in the shipping dropdown feel free to contact us.

Whether for refund or replacement please use the RMA form at the bottom of this page for all, if you cannot find your order number or have questions send us a message or give us a call through our contact form

For Refund
Our return period for a refund is 30 days from the date of delivery.
To be eligible for a refund, your item must be in new sellable condition and with any original packaging.

For Replacement
All Coolerguy(s), CG and Cabcool branded items come with a 3 year replacement warranty, all other brands we will replace within 30 days after which you must contact the manufacturer. 

Several types of goods are exempt from being returned
Liquid / Water Cooling systems and related items are subject to the terms and conditions of the manufacturer.
Their returns handled direct, if you need additional information on the warranty or help in contacting them let us know.
Additional non-returnable items:
Gift cards