Noctua NH-D9 DX-4677 4U, 2x92 mm CPU Cooler, Beige/Brown

The Noctua NH-D9 DX-4677 4U functions as a specialized air cooling solution developed for Intel Xeon processors on the LGA4677 platform. This unit employs a dual-tower heatsink architecture optimized for installations where vertical clearance is limited, such as in 4U server chassis or densely packed workstations. The specific dimensions, measuring 134 mm in height, ensure operational compatibility in constrained environments while managing processor thermal output effectively.

Thermal dissipation is handled by two 92 mm NF-A9 fans deployed in a push/pull setup, moving air across the dense aluminum fin array. These fans support 4-pin PWM control, regulating rotational speeds across a range of 400 RPM to 2500 RPM. This allows noise generation to be maintained between 16.3 dB and 30.6 dB, depending on the current CPU load. The cooler base utilizes nickel-plated copper components for efficient heat absorption and rapid transfer to the heat dissipation elements.

• Designed specifically for Intel LGA4677 sockets
• Dual-tower heatsink configuration
• Supports 4U rackmount server chassis environments
• Two 92 mm NF-A9 fans included
• Fan mean time to failure rated at 150,000 hours
• Maximum airflow output of 96.3 CFM
• Heatsink base constructed from nickel-plated copper
• Total unit height is 134 mm