BitFenix LED Case Fan Cooling BFF-SXTR-12025R-RP Speed: 950 ~ 2000 RPM (10%) Air Flow: 66 CFM at 2000 RPM (10%) Air Pressure: 2.74mm H2O at 2000 RPM (10%) Voltage: Operating - 12 VDC, Starting - 5 VDC Bearing Type: Fluid Dynamic Bearings (FDB)