Noctua's DX series CPU coolers have been the top choice for quiet premium cooling solutions for Intel Xeon processors for years. The NH-U14S DX-4677 features a larger, specially adapted contact surface for LGA4677. With its proven NH-U14S-based 140mm heatsink and two award-winning, PWM-controlled NF-A15 140mm fans, it combines maximum cooling performance with excellent acoustics. The high-quality overall package of the NH-U14S DX-4677 is completed by the professional SecuFirm2 mounting system and the pre-applied NT-H1 thermal paste – a true premium solution for quiet cooling of LGA4677-based Xeon workstations and servers. Since 2008, the DX series for Intel Xeon has become an established reference for quiet, high-quality air coolers for Intel Xeon processors. Thanks to their superior acoustic efficiency, they are ideal for workstations and servers in noise-sensitive environments.