Built to provide immense cooling performance for overclocked systems and demanding graphics applications, the Dark Rock Pro 4 Air Cooler from be quiet! features seven 6mm copper heat pipes, a 120mm Silent Wings 3 PWM fan, and a 135mm Silent Wings PWM fan with airflow-optimized blades with speeds of 1200 / 1500 rpm, six-pole motors, and fluid-dynamic bearings. Thanks to a funnel-shaped air inlet on the front fan, it provides extremely high air pressure. If you'd like to improve the Dark Rock Pro 4's cooling efficiency, an additional 120mm fan can be added. Living up to its name, this be quiet! product generates only 12.8, 17.9, and 24.3 dBA of noise under 50, 75, and 100% loads, yet offers a cooling capacity of 250W TDP. It has a lifespan of up to 300,000 hours and can be used with select Intel and AMD sockets.