I bought this case fan because my hard drive was warm despite passive cooling over 50 ° C and the graphic card fan was very noisy in load. The air evacuation was carried out only through the power supply fan. After installing the Sharkoon fan the temperature of the hard drive has dropped to 40 ° C. And very rarely the Grafikkartenlüter turns on strong. The "rubber-mounting system" keeps the Silent Eagle well, makes the fan extremely quiet and is easy to assemble.