Dynatron T459 Low Profile Active Copper LGA1156 Intel Core i3/i5/i7 CPU Cooler Processor Support: LGA 1155, Socket H2, 73W Maximum TDP, Intel Core i3/i5/i7, Intel Xeon Rated Voltage: DC 12V. Operating Voltage: 10.8V ~ 13.2V. Start Voltage: 7V Fan drive mechanics: Dual ball-bearing Life: 50,000 Hours Dimensions: 82.6mm x 81.0mm x 27.8mm