be quiet! Dark Rock PRO4 Dual Radiator w/ 2x 120mm Fans Air Cooler [Ultra Quiet]

Dark Rock Pro 4 offers an immense cooling performance of 250W TDP and virtually inaudible operation. Excellent for overclocked systems and demanding workstations. 
  • Two virtually inaudible Silent Wings PWM fans
  • Funnel-shaped frame of the front fan for high air pressure
  • Achieves only 24.3dB(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
  • German product conception, design and quality control

 

Noctua NH-D15 Dual Radiator w/ 2x 140mm Fans Air Cooler [Ultra Quiet]