Noctua's DX series CPU coolers have become the default choice for premium quiet cooling solutions for Intel Xeon processors. The NH-D9 DX-4677 4U has a larger, custom-designed contact surface for LGA4677 platforms. Based on the proven 92mm NH-D9L heatsink and equipped with two of Noctua's award-winning NF-A9 92mm fans with PWM control (high-efficiency 2500rpm version), powerful performance with 4U systems and combines it with excellent compatibility with other spatial systems. limited applications. The airflow direction of the NH-U9 is perpendicular to the longitudinal axis of the LGA4677 socket, making it ideal for systems with chassis exhaust fans in this direction. For systems where airflow must be parallel to the longitudinal axis of the socket, select the NH-D9 DX-4677 4U. Complete with the professional SecuFirm2™ mounting system and pre-applied NT-H1 thermal compound, the NH-D9 DX-4677 4U forms a complete premium package for quiet cooling of LGA4677-based Xeon workstations and servers.

Please note that the NH-D9 DX-4677 4U is a dedicated version of the Intel LGA4677 socket. Due to its customized larger base, it cannot be used for smaller sockets and is not compatible with Noctua's mounting kits for these sockets. See our socket compatibility overview for details.

Please note that a plastic CPU support frame is required to install the LGA4677 processor and heatsink. These carrier frames are included with boxed retail CPUs and are available separately from Intel resellers for tray-type CPUs. Since different CPUs require different carrier frame types (E1A, E1B or E1C), please make sure to purchase the correct carrier frame for the tray type CPUs.