Prolimatech PRO-BSC-45 92mm Hydrodynamic B45 CPU Cooler Series: Basic Series RPM: 1000~2000 RPM Compatibility: Socket 1156, Socket 1155, Socket 1150 Fan Mounting Types to Heatsink: Horizontal Heatsink Dimensions: 125 x 55 x 100mm (H x W x L) Weight: 0.63 lb.