Don't have sense spend $210 in the 1055T for run it in an AM2+ mobo, in that case is better go with a Athlon II X4 630, DDR3 and a new mobo. All this is around $330.
He is not looking to get the 1055T. I was just making the point that the bios update, since it supports the 1055T, should support what he is looking to get. As to your comment, it depends on what kind of ram he has and how much. From what I understand, DDR3 did not offer much of a performance improvement over DDR2 for AMD CPU's.