Thermaltake Contac Silent 12 CPU Cooler - 4.72in Maximum Fan Diameter - 556 gal/min Maximum Airflow - 28.8 dB(A) Noise - Hydraulic Bearing - 4-pin PWM

Superior heat dissipation. Optimized aluminum fins and solid copper heat pipes are designed for rapid heat dissipation, allowing maximum heat conductivity. High airflow fan blade design. The fan blades are engineered to achieve the optimal cooling performance and generate large volume of air passing through the heatsink at any angle. Reliable and silent operation. The hydraulic bearing self-lubricates with a high-quality, friction-reducing substance that lowers operation noise and enhance thermal efficiency. The seal cap prevents leakage of the lubricant and improves the lifespan of the unit.