FK120 The DeepCool FK120 is a High-Performance 120mm PWM fan with elite cooling and silent efficiency designed for demanding CPU or radiator cooling. ELITE COOLING Extremely efficient with a PWM range up to 1850RPM that maximizes air pressure and airflow for impressive cooling results while offering dynamic balance between high performance and low-noise operation. 500-1850 RPM Dynamic PWM Range 2.19 mmAq Max Static Pressure 68.99 CFM Max Airflow