be quiet! Pure Wings 2 120mm PWM

Features

• Nine airflow-optimized fan blades that reduce noise-generating turbulence. Air flow - 51.4 CFM. Noise level - 20.2 decibels
• Long life Rifle Bearing gives an operating lifetime of 80, 000 hours
• Even at maximum speed, operates at only 20.2Db(a)
• Especially recommended for use in water cooling and CPU cooling builds
• Pwm controlled fan speed through the motherboard