The 420mm CHIONE E4-420 CPU liquid cooler provides robust cooling for your CPU, incorporating a patented PWM pump with a speed of 4600 RPM and three 140mm ARGB PWM fans. Additionally, it features a digital display with a dual infinity mirror that showcases real-time CPU temperature or fan speed. Engineered to enhance airflow efficiency, the PWM fans operate at speeds of 450 to 1800 RPM, delivering exceptional static air pressure 2.57 mmH2O and airflow rates of up to 100.28 CFM. These hydraulic bearing fans incorporate PWM functionality and customizable RGB lighting, ensuring optimal cooling performance and visually captivating aesthetics.