The Cooler Master Silencio 625S with it’s sound dampening material and Silencio FP 120mm fans was indeed silent with a tower cooler using a moderately quiet fan designed more for air pressure than silent operation. With a dual radiator SilverStone TD02-E and open panels, we did hear a slight fan noise during start-up and heavy load periods. The sound dampening material is effective but forms a barrier against thermal dissipation. When buttoned up with all sound dampening panels in place, the Silencio has limited exhaust airflow. When the top panel is in place, the only exhaust is through the rear-mounted Silencio FP 120 fan.
