Noctua’s DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-U14S DX-4677 features a larger, custom-designed contact surface for LGA4677 platforms. Based on the proven, 140mm size NH-U14S heatsink and equipped with two of Noctua’s award-winning, PWM controlled NF-A15 140mm fans, it combines maximum performance and superb acoustics. Topped off with the professional SecuFirm2™ mounting system and pre-applied NT-H1 thermal compound, the NH-U14S DX-4677 forms a complete premium quality package for quietly cooling LGA4677 based Xeon workstations and servers.
Please note that the NH-U14S DX-4677 is a dedicated version for the Intel LGA4677 socket. Due to its customised larger base, it cannot be used on smaller sockets and is incompatible with Noctua’s mounting kits for these sockets. Please refer to our socket compatibility overview for details.
Please also note that installing an LGA4677 processor and heatsink requires a plastic CPU carrier frame. These carrier frames are included with boxed retail CPUs and available separately via Intel sales partners for tray type CPUs. As different CPUs require different carrier frame types (E1A, E1B or E1C), please make sure to purchase the correct carrier frame for tray type CPUs.
Cooler Specification
Socket compatibility Intel Xeon LGA4677
Height (without fan) 165 mm
Width (without fan) 150 mm
Depth (without fan) 52 mm
Weight (without fan) 797 g
Height (with fan) 165 mm
Width (with fan) 150 mm
Depth (with fan) 111 mm
Weight (with fan) 1136 g
Material Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
NSPR 179
Max. TDP see NSPR
Fan compatibility 140x150x25 (with 120mm mounting holes), 140x140x25 (with 120mm mounting holes), 120x120x25
Scope of delivery
2x NF-A15 PWM premium fan
NA-YC1 4-pin PWM y-cable
NT-H1 high-grade thermal compound (pre-applied)
SecuFirm2™ mounting kit for LGA4677
NM-SMT5 Torx® T30 mounting tool
FAN Specification
Model 2x Noctua NF-A15 HS-PWM
Bearing SSO2
Max. rotational speed (+/- 10%) 1500 RPM
Min. rotational speed @ 20% PWM (+/-20%) 300 RPM
Max. airflow 140,2 m³/h
Max. acoustical noise 24,6 dB(A)
Input power (max.) 1,56 W
Voltage range 12 V
MTTF > 150.000 h