[artem2302]

http://www.tomshardware.com/news/sin...cpu,30949.html

FX CPUs still require a Southbridge and Northbridge on the motherboard, APUs have an integrated Northbridge with the Southbridge on the motherboard, and AM1 Athlons and Semprons are SoC (system on chip) processors with USB and SATA controllers integrated. With all the differences between processor architectures, AMD was not able to create a universal socket that works with all of them. That all changes with Zen.