The Venturi High Flow Series fans are optimized for low-restriction airflow environments, making them an excellent choice for computer case fans, or other low-restriction usage 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 compared to other fans at the same, minimal noise level. The Venturi High Flow Series 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 operation Powerful motor maintains a reliable speed and an adapter for reducing the speed without the use of a fan controller Specification Type: 12cm Case Fan AMD/Intel: N/A Fan Connector(s): 3-pin Installation: Screws #Hide#LED Lightin No Colour: Black/White LED Lightin - Material: High-grade glass fiber reinforced thermoplastic polymer Weight: 169 g Fan Dimensions: 120 x 120 x 25 mm Fan Controller: No Rotation Speed: 1400 RPM 1100 RPM with low speed adapter Fan Bearin Fluid dynamic Air Flow: 83.4 CFM 65.8 CFM with low speed adapter Noise level: 25.3 dB (A) 19.0 dB (A) with low speed adapter Power: Fan input power: 1.3 W Fan max input current: 0.2 A Fan input voltage: 12 V Fan starting voltage: 4 V Additional Features: See Overview MTBF: \"150,000 hours\" Package Contents: Venturi Series fan Screw pack with 4 metal screws Low-speed adapter Package Type: Retail Package Weight: 0.2280 kg Warranty: 3 Years