Scythe Grand Kama Cross 2 CPU Cooler for LGA 2011/1366/1156/1155/1150/775 & Socket /FM2/FM1/AM3+/AM3/AM2+/AM2 /Material of Base Plate: Nickel-plated Copper /Type: Glide Stream 140 PWM /Speed: 500 (300 rpm) ~ 1,300 rpm (10%) (PWM-controlled)/Noise Level: 13 ~ 30.7 dBA/Air Flow: 37.37 ~ 97.18 CFM - 63.48 ~ 165.08 m/h/Static Pressure: 1.47 - 10.0 Pa / 0.15 - 1.02 mmH2O/Overall Dimensions: 6.88 x 5.51 x 5.51 inch / 175.2 x 140.0 x 140.0 mm