This be quiet! Dark Rock 4 CPU cooler is the perfect addition to any computer setup. It is compatible with a variety of sockets, including LGA 1156/Socket H, Socket AM2+, LGA 1150/Socket H3, Socket AM3, LGA 1155/Socket H2, and LGA 1151. The cooler is made of high-quality aluminum and copper materials, ensuring optimal performance and durability. With a maximum airflow volume of 86 CFM and a maximum fan speed of 1400 RPM, this cooler is designed to keep your CPU cool and running smoothly. The 135 mm fan diameter and fluid bearing type provide efficient and reliable cooling. This product comes in a sleek black box and is a great choice for anyone in need of a reliable CPU cooler.