X-wind Aluminum Fan Ultra X Wind Socket 478/754/939/940 Aluminum CPU Cooler General Features: Socket Type: Socket 940/939/754/478 Aluminum Heat Sink Innovative thermal conductor construction High density radiated aluminum fin design 116 fins provide outstanding cooling surface area Secured Bracket included Easy Installation with snapping bolts 3-pin fan connector Specifications: Cooler Dimension: 4.06 x 4.06 x 2.17-inches