Thermaltake Riing Silent 12 Pro CPU cooler has implemented a special designed 11 fan-blade 120mm PWM fan which is fit to enhance the airflow as well as produces an impressive cooling performance. Most importantly, the Riing Silent 12 Pro series is aesthetics in performance. Hydraulic bearing for silent operation guarantees ultra-low noise. The patented LED ring maintains color and brightness uniformity. Especially, the lighting effect is visible from all sides and angles.