AM3+ is a modification of the AM3 Socket designed for CPUs which use the AMDBulldozermicroarchitecture and retains compatibility with AM3 processors. The Vishera line of AMD CPUs also all use Socket AM3+.
Socket AM3 is a CPU socket for AMDprocessors. AM3 was launched on February 9, 2009 as the successor to Socket AM2+, alongside the initial grouping of Phenom II processors designed for it. The sole principal change from AM2+ to AM3 is support for DDR3 SDRAM.