AMD has announced the expansion of its Chromebook-focused lineup to include 14 nm Zen-based Athlon and 12 nm Zen+-based Ryzen processors. The new APUs for Chromebooks allow Chrome OS users to run more capable apps natively or via Linux. These processors, which carry a "C" moniker in the branding, will cater to more than 14 upcoming Chromebook designs from HP, Asus, Lenovo, and other OEMs.
https://www.notebookcheck.net/AMD-expands-Chromebook-APU-offerings-with-new-Zen-based-Athlon-C-and-Zen-based-Ryzen-C-SKUs-14-shipping-designs-expected-from-OEMs-this-year.494552.0.html