The NH-U9S chromax.black is an all-black version of Noctua ?€° ?› ?ªs award-winning NH-U9S premium-quality quiet CPU cooler. Thanks to the same proven compact 92mm tower heatsink design and NF-A9 PWM fan, it stays true to the NH-U9S ?€° ?› ?ªs successful formula of fusing strong cooling performance with excellent quietness of operation and outstanding RAM, case and PCIe compatibility.