The Noctua NH-D9 DX-4677 4U is a compact dual-tower CPU cooler engineered for Intel Xeon platforms based on LGA4677 and LGA4710 sockets. With a height of just 134mm and dual NF-A9 HS-PWM fans in push/pull configuration, it delivers exceptional cooling in 4U rackmount systems. Its enlarged baseplate ensures superior thermal transfer from Xeon CPUs with large integrated heatspreaders, making it a go-to solution for enterprise-class reliability and thermal headroom.

Key Features:

Dual-tower design with 92mm fans for high-density airflow and compact performance

Optimized 70x56mm contact surface for LGA4677/LGA4710 Xeon processors

Compatible with 4U rackmount cases due to 134mm total height

Pre-applied NT-H1 thermal compound for time-saving deployment

SecuFirm2™ mounting system with professional-grade Torx T30 tool included

Specifications:

Dimensions (with fans): 134 x 95 x 120 mm
Weight (with fans): 769 g
Material: Copper base & heatpipes, aluminum fins, soldered joints, nickel plating
Socket Support: Intel LGA4677 / LGA4710 (Xeon Sapphire Rapids)
Fans: 2x NF-A9 HS-PWM
Fan Speed: 400–2500 RPM ±10%
Airflow: Up to 96.3 m³/h
Noise: Up to 30.6 dB(A)
Power: 12V DC, 1.68W per fan
Bearing: SSO2
MTTF: >150,000 hours

Compatibility:
Designed exclusively for Intel Xeon platforms using LGA4677 / LGA4710 sockets with carrier frames (E1A, E1B, E1C). Fully 4U compatible in depth and height.

Additional Features:

• High-pressure dual-fan airflow tuned for dense fin stacks

• Mounting bars for top-down and side-facing installations

• Designed for high-reliability enterprise environments

• Backed by a 6-year manufacturer warranty

Customer Benefits:
Ideal for IT professionals and system integrators building 4U servers or Xeon-based workstations, the NH-D9 DX-4677 4U offers robust cooling in a form factor that fits where larger towers won’t. Reliable, quiet, and designed to run 24/7 under heavy load.

What’s in the Box:

• NH-D9 DX-4677 4U heatsink

• 2x NF-A9 HS-PWM fans

• NA-YC1 PWM Y-cable

• NT-H1 thermal compound (pre-applied)

• SecuFirm2™ mounting system for LGA4677

• NM-SMT5 Torx T30 screwdriver

Compliance:
This product meets all applicable European and international standards (CE, RoHS, REACH, WEEE, etc.). It has been designed and tested for maximum safety, performance, and environmental responsibility.

Manufacturer Contact:
Company Name: Noctua
Address: Noctua Produktions GmbH, Lastenstraße 19, 4020 Linz, Austria
Email: support(at)noctua(dot)at