Dark Rock Pro 4 offers an immense cooling performance of 250W TDP and virtually inaudible operation. Excellent for overclocked systems and demanding workstations. Features Two virtually inaudible Silent Wings PWM fans Funnel-shaped frame of the front fan for high air pressure Achieves only 24. 3d B(A) at maximum fan speed Seven high-performance copper heat pipes Airflow-optimized cooling fins; cutouts enhance the RAM compatibility Easily installable black installation kit can be mounted from above Brushed aluminum top cover with diamond cut finish 3-year manufacturer\'s warranty German product conception, design and quality control VIRTUALLY INAUDIBLE OPERATION Even at 100% PWM fan speed noise is an insignificant 24. 3d B(A) The two Silent Wings PWM fans feature advanced fluid-dynamic bearings, smooth six-pole motors and airflow-optimized fan blades. The front Silent Wings 3 fan provides extremely high air pressure, thanks to a funnel-shaped air inlet in the frame. Decoupled fan mounting with vibration-isolating elements on the heat sink. IMMENSE COOLING POWER Achieving an incredible performance-to-noise ratio No compromise in silence and performance for overclocked systems and demanding graphics applications! Dark Rock Pro 4 provides an impressive rating of 250W TDP and achieves low temperatures even during periods of peak CPU performance. HIGHLY ADVANCED DESIGN The core features that result in high-end cooling Dark Rock Pro 4 is equipped with seven advanced technology 6mm copper heat pipes that maximize the heat conductance. Airflow-optimized, wave-contoured cooling fins with small dots on their surfaces increase the air circulation. The special black coating with ceramic particles makes a perfect transfer of heat possible. DOUBLE-TOWER LAYOUT Powerful cooling for your components Dark Rock Pro 4 contains two aluminum heat sinks. The cutouts provided enhance its RAM compatibility. Two fans are pre-installed. It is also possible to add another 120mm fan for even better c