Socket AM2+ is a CPU socket designed by AMD for their processors. Introduced in 2007, it supports both AMD's Athlon 64 and Phenom series of processors. The socket allows for improved performance and compatibility with newer technologies compared to its predecessor, Socket AM2. One of the key features of Socket AM2+ is its support for DDR2 memory, which enhances data transfer rates. Additionally, it includes backward compatibility with Socket AM2 processors, making it easier for users to upgrade their systems without needing to replace the motherboard.