Dark Rock Pro 5 offers an immense cooling performance and virtually inaudible operation. Excellent for heavily overclocked systems and demanding workstations. 7 high-performance heat pipes for immensely high cooling power 2 virtually inaudible Silent Wings PWM fans for perfect airflow Front fan with funnel-shaped outlet for optimal air distribution A speed switch allows you to switch between Quiet Mode and Performance Mode anytime Height-adjustable front fan and generous heat sink cut-outs for high RAM and VRM cooler compatibility Special black coating with ceramic particles enables perfect heat transfer and elegant look Compatible with liquid metal thermal grease