The Ryzen 3000 series of AMD's "Zen 2" generation is up to 16 cores doubling the number of cores, and rumors that appeared in 2019 - GIGAZINE
CCX Size, Packaging, and Routing: 7nm Challenges - AMD Zen 2 Microarchitecture Analysis: Ryzen 3000 and EPYC Rome
AMD announces Zen 2 Ryzen 3 3100 and Ryzen 3 3300X CPUs for mainstream, risks cannibalizing sales due to Ryzen 5 1600 AF and upcoming Renoir desktop - NotebookCheck.net News
AMD claims Zen 2 has 29% higher IPC than Zen 1 in certain workloads - NotebookCheck.net News