Wrong socket type. You need a CPU that is AM3 not to be confused with AM3+
Processor Frequency Number of Processing Cores L3 Cache Size TDP Unlocked Multiplier Turbo Core Technology Socket
AMD Phenom II X6 1090T Black Edition 3.2 GHz 6 6MB 125 W Yes Yes AM3
AMD Phenom II X6 1055T 2.8 Ghz 6 6MB 125 W No Yes AM3
AMD Phenom II X4 965 Black Edition 3.4 GHz 4 6MB 125 W Yes No AM3
AMD Phenom II X4 955 Black Edition 3.2 GHz 4 6MB 125 W Yes No AM3
AMD Phenom II X4 955 3.2 GHz 4 6MB 125 W No No AM3
AMD Phenom II X4 945 3.0 GHz 4 6MB 95 W No No AM3