No Compromise Silence & Performance Be quiet! Silent Wings® fans stand for state-of-the-art technology virtually inaudible operation & superior cooling. The third generation of this award-winning fan series offers unrivaled & uncompromising performance with a broad range of meticulous optimizations. They feature a smooth-running 6-pole motor an advanced fluid-dynamic bearing a unique airflow-optimized fan blade design & a fan frame with funnel-shaped air inlets The Silent Wings® 3 120mm model combines all of the above best-in-class features. It strikes the perfect balance between cooling & silence with a maximum of 16.4db (A) & meets all the requirements to be a perfect choice for heat sinks PC cases & radiators. Practically Silent Operation Nine silence-optimized fan blades with high airflow capabilities reduce noise-generating turbulences while increasing air pressure. Very quiet operation even at maximum speed with noise of 19.2 d B (A) Product conception design & quality control in Germany Perfect choice for Home & Office PCs Gaming & Multimedia systems. Especially recommended for use in water cooling & CPU cooling builds. High-quality rifle bearing technology contributes to a very long lifespan of up to 80000 hours. Winner of the prestigious Red Dot Design Award 2014. Three year warranty. .