The Venturi High Pressure Series PWM fans are optimized for high-restriction airflow scenarios, making them an excellent choice for usage on large heatsinks, on radiators, or in other highly restrictive scenarios True FDB-bearings provides silent operation and a long lifespan Counter-balanced magnet reduces axial tension on the bearing Integrated vibration-dampening corners Designed for strength and silence These fans can move an amazing amount of air through restricted environments compared to other fans at the same, minimal noise level.   The Venturi High Pressure Series PWM fans are ideal for anyone looking for a perfect balance between high performance and low noise built from sturdy, high quality materials. Key features Made from high-grade glass fiber reinforced thermoplastic polymer Ground-breaking airflow, perfect for low-restriction usage scenarios Aerodynamical stator struts reduce noise and unwanted turbulence Strategically placed notches on the blades further reduce and diffuse any humming noise produced when the blades pass the stator struts The trip wire technology introduces a micro-turbulent layer that combats elements that negatively affect performance, resulting in quieter operatio Specification Type: 12cm Case Fan AMD/Intel: N/A Fan Connector(s): 4-pin Installation: Screws LED Lightin No Colour: Black/White LED Lightin - Material: High-grade glass fiber reinforced thermoplastic polymer Weight: 179 g Fan Dimensions: 120 x 120 x 25 mm Fan Controller: PWM Rotation Speed: 5400 - 1800 RPM Fan Bearin Fluid dynamic Air Flow: 61.4 CFM Noise level: 31.7 dB (A) Low PWM: Power: Fan input power: 1.0 W Fan max input current: 0.2 A Fan input voltage: 12 V Fan starting voltage: 6 V Additional Features: See Overview MTBF: \"150,000 hours\" Package Contents: Venturi Series fan Screw pack with 4 metal screws 1-2 PWM signal splitter cable Package Type: Retail Package Weight: 0.2370 kg Warranty: 3 Years