CPU Support : AMD Socket 754, 939 Sempron series AMD K8 Socket 754, 939, 940 3700+ Specification: 1.CPU Support : AMD Socket 754, 939 Sempron seriesAMD K8 Socket 754, 939, 940 3700+2.With Aluminum pressing heatsink fan bearing:sleeve,one ball and two ball are available3.Rate voltage:12V4.Fan dimension:Φ80*25mm5.Heat sink dimension:80*80*35mm6.Air flow:43CFM7.Fan speed:2600±10%rpm