Processor Cooler 9.2 cm 2500 RPM Supported processor sockets: LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1156 (Socket H), Socket AM4 23.6 dB 2.11 mmH2O Self-Stabilising Oil-pressure Bearing (SSO) Black The NH-L9i chromax.black is an all-black version of Noctuas award-winning NH-L9i low-profile quiet CPU cooler for HTPCs and Small Form Factor (SFF) builds. Thanks to the same proven heatsink design and NF-A9x14 PWM fan, it stays true to the NH-L9is successful formula of fusing a height of only 37mm with strong performance and excellent quietness of operation, as well as 100% RAM and PCIe compatibility. At the same time, the chromax.black version with its black fan and black coated heatsink combines these assets with a sleek stealth look. Topped off with the renowned SecuFirm2low-profile mounting system for Intel LGA115x, Noctuas enthusiast-grade NT-H1 thermal compound and a full 6-year manufacturers warranty, the NH-L9i chromax.black is a premium choice f