Lepa Louver LV12 Cooling LPALV12-BK Excellent thermal conductivity Exceptional heat transfer efficiency Superior contact Higher durability Patented aps control Excellent Thermal Conductivity - Louver design helps the airflow movement into an "U-shape" aluminum fin to increase the path of thermal conductivity. Exceptional Heat Transfer Efficiency - Louver fin breaks the thermal boundary layer to increase heat exchange rate. Superior Contact - H.D.T. (Heat pipe Direct Touch) Technology ensures rapid thermal conduction and eliminates CPU hot spot. Compatibility - Slim heat-sink tower design increases RAM installation flexibility. Higher Durability - S.N.T.C (Super Nano Thermal Conductive) coating protects heat-sink to avoid oxidation, keeps excellent heat transfer efficiency and extends the life expectancy of the cooler. Patented APS control - High performance PWM fan with smart APS (Adjustable Peak Speed) control provides 3 peak rpm options. BOL Bearing - Barometric Oil less (BOL) Bearing for long life span and silent spinning. Silence With High Performance - Sophisticated fin gap calculation leads the ultra balancing between fan speed and heat transfer efficiency.