CPU
• Supports 64-bit AMD® Athlon™ 64FX/64 processor (Socket 939)
• Supports 3000+, 3200+, 3500+, 3800+, 4000+, FX53 and FX55
http://www.msicomputer.com/product/p_spec.asp?model =K8N_Neo4-F
http://www.czechcomputer.cz/cat_tree.jsp?bpath=Proc esory%5CSocket+939