The be quiet! BK022 Dark Rock Pro 4 CPU Air Cooler is a high-performance cooling solution designed for CPUs with up to 250W TDP. Featuring a 135mm fan diameter and a maximum fan speed of 1500 RPM, this CPU fan with heatsink utilizes a fluid bearing for quiet and efficient operation. Compatible with various socket types including LGA 1366, LGA 2011, LGA 1156, LGA 1150, and LGA 1151, this cooler offers reliable cooling performance for a wide range of CPUs. Made with quality materials such as aluminum and copper, the be quiet! BK022 Dark Rock Pro 4 is a top choice for those looking to keep their system running smoothly and efficiently.