The Noctua NH-U9 DX-4677 is a compact, high-performance CPU cooler engineered specifically for Intel Xeon Scalable processors on the LGA4677 platform. Featuring dual NF-A9 PWM fans in a push-pull configuration and a streamlined 125mm height, it fits seamlessly into 4U server racks and dense workstation environments while ensuring optimal cooling and quiet operation.

Key Features:

Designed exclusively for Intel Xeon LGA4677 (Sapphire Rapids) processors

Compact 125mm height for full 4U rackmount server compatibility

Dual NF-A9 PWM fans for strong airflow and superior thermal efficiency

SecuFirm2™ mounting system optimized for Intel Xeon platform stability

Ships with NT-H1 thermal compound pre-applied for optimal conductivity

Specifications:

• Dimensions (with fans): 125 x 95 x 120 mm

• Weight (with fans): 895 g

• Materials: Copper (base and heatpipes), aluminium (cooling fins), soldered joints, nickel-plated

• Socket Compatibility: Intel LGA4677 only

• Fans: 2 × NF-A9 PWM 92mm

• Fan RPM: 400–2000 RPM ±10%

• Airflow: up to 78.9 m³/h per fan

• Acoustics: max. 22.8 dB(A)

• Power Connector: 4-pin PWM

• Max TDP: 160W+ (platform and airflow dependent)

Additional Features:

• Full IHS coverage for optimal heat transfer on Xeon CPUs

• Ideal for enterprise, engineering, and virtualized environments

• Compatible with Supermicro, ASUS, and ASRock Rack LGA4677 motherboards

• Backed by Noctua’s reputation for reliability in 24/7 mission-critical systems

Customer Benefits:
Engineered for modern server and workstation systems using Intel Xeon Sapphire Rapids CPUs, the NH-U9 DX-4677 ensures consistent thermal performance, compact form factor, and acoustic comfort even under sustained load.

What’s in the Box:

• NH-U9 DX-4677 CPU cooler

• 2 × NF-A9 PWM fans

• Y-cable splitter

• Low-Noise Adapters (L.N.A.)

• SecuFirm2™ mounting kit for Intel LGA4677

• Pre-applied NT-H1 thermal compound

• Noctua metal case badge

• Installation manual

Compliance:
This product meets CE, RoHS, REACH, and WEEE directives. Designed and manufactured to meet rigorous data center and workstation standards, ensuring long-term stability, safety, and acoustic optimization.

Manufacturer Contact:
Company Name: Noctua GmbH
Address: Josef-Preis-Allee 18, 8020 Graz, Austria
Email: support(at)noctua(dot)at