The CORSAIR AF140 ELITE High-Performance 140mm PWM Fluid Dynamic Bearing Fan delivers PWM-controlled fan speeds from 400 RPM up to 1,600 RPM for powerful cooling, near-silent operation, and exceptional durability. With a low-noise design, the AF140 ELITE spins as quietly as 31.0 dBA, while CORSAIR AirGuide technology with anti-vortex vanes channels airflow to concentrate your cooling. The AF140 ELITEs fluid dynamic bearing ensures exceptional durability and reliable cooling performance while pushing up to 84.5 CFM of air with 1.73mm-H2O of static pressure even at full speed. Support for 0 RPM PWM signals enables the fan to stop completely, eliminating noise entirely.