Multiple support bracket system For AMD Ryzen (AM4) platform. The Best C/P CPU Cooler for Overclockers & Gamer! Proprietary through holes on fins for efficient ventilation. Fanless design for low-noise operation. Including one Thermalright TY-147A Ultra-low noise 3001300RPM PWM-Fan (MAX21 dBA). Enlarged copper base to ensure 100% contact with AMD Ryzen (AM4) processors.