Noctua Xeon CPU Cooler NH-U9DX

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Noctua CPU Cooler NH-U9DX

Based on Noctua's compact NH-U9 series and fitted with the award-winning NF-B9 fan and NT-H1 thermal compound, the NH-U9DX forms a complete premium quality package that provides excellent quiet cooling performance for 4U Xeon workstations and servers. The new SecuFirm2™ mounting system for socket 771 is highly convenient and makes the NH-U9DX a tailor-made drop-in replacement for standard Intel coolers. To make your Xeon systems quieter has never been so easy!

  • Tailor-made for Intel Dual Xeon
  • Outstanding quiet cooling performance for 4U workstations and servers
  • SecuFirm2™ for Socket 771 and 604
  • Drop-in replacement for standard Intel coolers
  • NF-B9 92mm premium fan
  • Incl. Noctua NT-H1 high-end thermal compound
Socket compatibility Intel LGA 771 & mPGA 604 (10mm mounting-holes only)
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) 590 g
Material Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Application Intel Xeon 5xxx & Xeon 7xxx
Fan compatibility 92x92x25 (2 fans can be installed)
Scope of Delivery
  • 1x NH-U9DX 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
  • SecuFirm2™ mounting kits for 771/604


  • Fan specifications
    Model Noctua NF-B9
    Bearing SSO-Bearing
    Rotational Speed (+/- 10%) 1600 RPM
    Rotational Speed with L.N.A. (+/- 10%) 1300 RPM
    Rotational Speed with U.L.N.A. (+/- 10%) 1000 RPM
    Airflow 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
    MTBF > 150.000 h

    sku 4716123313069

    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