AM3+ was released in mid-2011[1] designed for CPUs which use the AMD Bulldozer microarchitecture and retains compatibility with processors made for AM3.

It is the last AMD socket for which Windows XP support officially exists.

[4] Some manufacturers have attempted to bring AM3+ support to some of their AM3 technology motherboards via use of the AM3+ socket and a BIOS upgrade.

Therefore, some CPU PWM fan headers may only run at full speed.

Also, certain power-saving features may not work, due to lack of support for rapid VCORE switching.