Large heat-sink fins surface area with proprietary through holes on fins for efficient ventilation Fin stack moved next to rear system fan for low-noise fanless operation. Including one Thermalright TY-147B Utra-low noise 300~1300RPM 150mm PWM-Fan (MAX 20 dBA). Enlarged copper base to ensure 100% contact with hot 2011-3 processors. Multiple support bracket system For Intel and AMD platform.