Product SpecificationPCCOOLER Paladin EX400; CPU Cooler dimensions: 130(L)X75(W)X157(H)mm (5.12x2.95x6.1 inch); heat sink material: Aluminum, CPU cooler is equipped with metal fasteners of Intel & AMD platform to achieve better installation, double tower cooling is stronger((Note:Please check your case and motherboard for compatibility with this size cooler.) High Performance 120MM Full Function PWM FanUnique 120mm fan with Hydro bearing, covered with anti-vibration rubber pads, providing intelligent speed control and ultra-quiet operation for efficient CPU cooling performance, which is compatible with 120mm fan holes. ; Standard size PWM fan:120x120x25mm (4.72x4.72x0.98 inches); fan speed (RPM):400~1800RPM (PWM)±10%; power port: 4pin; Voltage:12V; Air flow:73.6CFM(MAX); Noise Level16~28.6dB(A), leave room for memory-chip(RAM), so that installation of ice cooler cpu is unrestricted.