Check your MB and it's CPU compatibility chart, there are up to 4 core Phenoms that work with appropriate AM2 boards. If it is actually AM2+ board, even Athlon II x4 are available which are classes over that one of yours. https://en.wikipedia.org/wiki/List_of_AMD_Phenom_microprocessors
Check your MB and it's CPU compatibility chart, there are up to 4 core Phenoms that work with appropriate AM2 boards. If it is actually AM2+ board, even Athlon II x4 are available which are classes over that one of yours. https://en.wikipedia.org/wiki/List_of_AMD_Phenom_microprocessors