80mm fan case fan rotations per minute 2 500 rpm max noise emission 26 db volume flow 52 mh airflow 3061 cfm statischer druck 189 dimensions wxhxd 80 x 80 x 15 mm width 80 mm height 80 mm depth 15 mm fan bearing nb nanosli operating power input 153 watt series noiseblocker blacksilent pro mtbf 120 000 hours port 4 pin weight 55 g leaf colour black frame colour black