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Brown single-tower CPU cooler with two 92mm fans and six heatpipes, 125mm tall

Noctua

Noctua NH-U9 DX-4677 CPU cooler

SKU CH-VBEG-94HGD

A compact 92 mm dual-fan air cooler with six heatpipes for Intel Xeon LGA4677 processors

  • Compact 92mm footprint ensures 4U server fit
  • Six heatpipes deliver high cooling performance
  • Dual NF-A9 fans run silent at idle
  • Pre-applied NT-H1 paste simplifies installation
  • Supports Intel Xeon LGA4677 processors

Compact 92mm cooler for Xeon LGA4677

The Noctua NH-U9 DX-4677 is a premium air cooler built for Intel Xeon processors on the LGA4677 socket. Its single-tower layout and 125mm height fit 4U server chassis while keeping PCIe slots clear. Two NF-A9 fans run in push/pull to serve quiet workstations and dense rack deployments.

Thermals noise and power in normal use

Six heatpipes and dual NF-A9 fans move heat away from high-wattage Xeon CPUs without excessive airflow. PWM control lets the fans stay near silent at idle and ramp only when the load demands it. The pre-applied NT-H1 compound ensures consistent contact from the first boot.

Upgrade path and when it matters

This cooler replaces stock or basic heatsinks that cannot sustain multi-core Xeon workloads in a 4U envelope. The jump is worth it when thermal throttling appears or when fan noise becomes disruptive in shared spaces. Builders using tray CPUs without a carrier frame cannot install it until that frame is sourced.

Highlights

  • Compact 92mm footprint ensures 4U server fit
  • Six heatpipes deliver high cooling performance
  • Dual NF-A9 fans run silent at idle
  • Pre-applied NT-H1 paste simplifies installation
  • Supports Intel Xeon LGA4677 processors

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the NH-U9 DX-4677 on an LGA4677 socket and what step is often missed?

The cooler requires a CPU carrier frame which is included with boxed retail Xeon processors but must be sourced separately for tray CPUs; the Torx T30 tool is supplied for mounting.

What maintenance will the NH-U9 DX-4677 need over time?

The pre-applied NT-H1 thermal compound should be replaced if the cooler is removed or after several years of operation; the two NF-A9 fans can be cleaned with compressed air.

What limit appears first when the NH-U9 DX-4677 runs under sustained load?

The 125 mm height restricts use to 4U or larger server chassis, and the 92 mm dual-fan push-pull airflow ceiling becomes the thermal bottleneck before the six heatpipes saturate.

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