Be Quiet! CPU Cooler         Dark Rock Slim The Be Quiet! Dark Rock Slim offers exceptionally high cooling performance with a 180W TDP and virtually inaudible operation. Ideal for high-end builds with limited space, the fan operates at just 23.6 dB at maximum speed. Contoured cooling fins increase air circulation. The Be Quiet! Dark Rock Slim fan features seven airflow-optimized fan blades, a six-pole motor for reduced vibration, and a durable fluid-dynamic bearing. The detachable fan mount incorporates vibration-reducing components.         Compact Design bequiet! CPU CoolerDark Rock Slim features a compact design that provides excellent heat dissipation in a small space, making it ideal for high-end builds with limited space. Flow-optimized, wave-shaped cooling fins with small dots on the surface increase airflow. A special black coating with ceramic particles enables excellent heat transfer.