Dark Rock is the high-end series of the be quiet! range of CPU coolers. It comprises double-tower, single-tower and top-flow cooler designs. They all offer incredible performance-to-noise ratios and the highest reliability available with absolutely no compromise in silence and performance. Dark Rock coolers are virtually inaudible and place the famous be quiet! SilentWings® technology at the heart of your PC. They are excellent for overclocked systems and demanding multi-graphics platforms. No Compromise Silence and Performance Dark Rock 4 offers an extreme cooling performance and virtually inaudible operation. Perfect for overclocked systems and demanding workstations. - Silent Wings 135mm PWM fan features an advanced fluid-dynamic bearing and a smooth 6-pole motor - Optimal balance of cooling and quietness with only 21.4dB(A) at maximum fan speed - Six high-performance copper heat pipes that provide maximal heat conductance - Wave-contoured cooling fins for increased air circulation - Special black coating with ceramic particles enables perfect heat transfer - Supports an additional 120mm fan; clips are included in scope of delivery - Easily installable black installation kit can be mounted from above - Elegant, brushed aluminum top cover with diamond cut finish - 3-year manufacturer’s warranty - Product conception, design and quality control in Germany
