Much of the focus on AMD’s AM4 platform has been Ryzen, which now spans three different product tiers based on the company’s Zen architecture (Ryzen 3, Ryzen 5, and Ryzen 7). However, Ryzen is not the only processor family that is compatible with AM4. AMD served up 7th generation Bristol Ridge A-series APUs and Athlon X4 processors for AM4

Source: Hot Hardware – AMD Announces Athlon X4 And A-Series CPUs Compatible With Ryzen AM4 Motherboards