Ek Water Blocks EK-VARDAR F4-120 (2200RPM) HIGH-STATIC Pressure Computer Cooling Fan - 120mm High-static pressure / low noise profile - unlike other general-purpose computer cooling fans, the EK-Vardar family of fans is built specifically for computer liquid cooling systems, namely radiator cooling Fan Speed: 880 - 2200 rpm (+/- 10%) - Noise Level: 33.5 dBA - Static Pressure: 3.16mm H2O = 31 Pa Dimensions: 120 x 120 x 25 mm