Noctua

Noctua NH-U9DX i4, Premium CPU Cooler for Intel Xeon LGA20xx (Brown)

Name: Noctua NH-U9DX i4, Premium CPU Cooler for Intel Xeon LGA20xx (Brown)
Brand: Noctua
SKU: B00E1JGFA0

Status: Noctua NH-U9DX i4: Unavailable on Amazon as of 2026-10-06 22:27 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Noctua NH-U9DX i4: Just 125mm tall, clears 4U servers and compact workstation cases; main trade-off: xeon LGA20xx only; no AMD or mainstream LGA1200/1700 support.

Unavailable on Amazon as of 2026-10-06 22:27 UTC

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ Just 125mm tall, clears 4U servers and compact workstation cases
✓ Dual NF-B9 92mm PWM fans with Low-Noise Adaptors run near-silent
✓ Fits Square and Narrow ILM LGA2011, LGA1356 and LGA1366 Xeon sockets
✓ 6-year Noctua warranty plus bundled award-winning NT-H1 thermal paste

Cons

✗ Xeon LGA20xx only; no AMD or mainstream LGA1200/1700 support
✗ Single 92mm tower trails 120/140mm coolers on high-TDP chips
✗ Brown-and-tan fan colorway clashes with most build themes
✗ Air-cooling ceiling limits heavily overclocked Xeon headroom

Manufacturer description

Noctua's DX line of coolers has become a default choice in high performance quiet cooling solutions for Intel Xeon CPUs. The latest i4 revision supports LGA2011 (both Square ILM and Narrow ILM), LGA1356 and LGA1366 based Xeon platforms and the 9cm model NH-U9DX i4 comes equipped with two of Noctua’s award-winning NF-B9 premium fans with PWM for automatic speed control. Standing 125mm tall, the NH-U9DX i4 combines outstanding quiet cooling efficiency with full 4U compatibility. Fitted with the professional SecuFirm2™ mounting system and bundled with Noctua's industrial-grade NT-H1 thermal…

SpecPicks Verdict

SpecPicks scored Noctua NH-U9DX i4 using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. Noctua's cooling & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for cooling & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Compact single-tower design combines strong cooling performance with excellent case- and PCIe-compatibility
4U compatibility: Only 125mm height is ideal for compact servers and workstations
2 highly optimised NF-B9 92mm fans with PWM support and Low-Noise Adaptors for automatic speed control and ultra-quiet operation
Supports both Square ILM and Narrow ILM type LGA20xx (LGA2066, LGA2011-0, LGA2011-3) sockets as well as LGA1356 and LGA1366 based Intel Xeon platforms
Includes award-winning NT-H1 thermal compound; Renowned Noctua quality backed up by 6-year manufacturer’s warranty

Full Specifications

Brand	Noctua
Model	NH-U9DXi4
Voltage	12 Volts
Material	Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Unit Count	1.0 Count
Noise Level	17.6 Decibels
Part Number	NH-U9DXi4
Material Type	Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Cooling Method	Air
Number of Items	1
4U compatibility	Only 125mm height is ideal for compact servers and workstations
Air Flow Capacity	64.3 Cubic Meters Per Hour
Compatible Devices	Desktop
Power Connector Type	4-Pin
Warranty Description	6 year manufacturer’s warranty
Maximum Rotational Speed	1600 RPM
Item Dimensions L x W x H	4.92"L x 3.74"W x 2.8"H
Global Trade Identification Number	00842431013231, 04716123314967
EU Spare Part Availability Duration	6 Years

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Noctua NH-U9DX i4, Premium CPU Cooler for Intel Xeon LGA20xx (Brown) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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