Semi-passive quiet mode with full fan stop for completely silent operation. Hardware switch to toggle between performance and quiet modes. 7 optimized high-performance heat pipes for immensely high cooling power. 2 virtually inaudible Silent Wings PWM fans for perfect airflow. Optimized heat sink for more cooling power. Height-adjustable front fan with rail system and heat sink cut-outs for high RAM and VRM cooler compatibility. Top cover with brushed finish aluminium badge. Middle fan attached to the top cover for convenient installation. Simple mounting systems for fans and heat sink. Ceramic-particle black coating and side covers create the signature elegant be quiet!. look. More performance and silence. Dark Rock Pro 6 offers extremely high cooling performance and virtually inaudible operation. Excellent for heavily overclocked systems and demanding workstations. Using semi-passive quiet and performance modes, it is designed for users who demand consistently top performance yet still expect virtually inaudible operation at all times. Performance. Suitable location. Chipset. Type. Air cooler. Fan diameter. 120/135 mm. Supported processor sockets.