<P> AMD confirmed that there is an upgrade path from Socket AM2+ to AM3: </P> <Ul> <Li> AM3 processors work on AM2+ motherboards due to the presence of both the DDR2 and DDR3 memory controllers on the processor </Li> <Li> AM2+ processors do not work on AM3 motherboards due to the processor's lack of a DDR3 memory controller </Li> </Ul> <Li> AM3 processors work on AM2+ motherboards due to the presence of both the DDR2 and DDR3 memory controllers on the processor </Li> <Li> AM2+ processors do not work on AM3 motherboards due to the processor's lack of a DDR3 memory controller </Li>

What is the difference between am2 and am2+