Zero RPM fan mode heat dissipation, the "HX1200" has its own 13.5cm cooling fan with its own NR135P FDB liquid bearing, with a maximum speed of about 1,200RPM and a maximum sound and noise of ~25dBA. Compared with other fans, the noise are lower and the bearing life is longer.model: NR135Lsize: 13.5*13.5*25cmvoltage: 12Vcurrent: 0.22Awiring 2-wirebearing: Hydraulicrotational speed: 1500RPM