CPU Cooler Fan SAN ACE MC For Intel 775-land LGA Package/; Rated voltage (V): 12; Operating Voltage Range (V): 10.8-13.2; Rated Current (A): 0.31; Rated Rotaing Speed (min-1): 3900 / 2300; Thermal Resistance (K/W): 0.266 / 0.320; Noise (dB[A]): 42 / 27; Mass (g): 575;