The upcoming AMD Zen 3 Ryzen 4000 desktop CPUs will likely offer 10-15% IPC gains per thread, according to a new report. Zen 3 will feature up to eight cores per CCX and a 32 MB L3 cache that can potentially improve latency in gaming. Also being confirmed is that Zen 4 will require a new socket and feature a 1 MB L2 cache and AVX 512 support.
https://www.notebookcheck.net/Latest-Zen-3-rumor-further-reiterates-10-15-IPC-gains-per-thread-and-32-MB-of-shared-L3-cache-per-CCX-Zen-4-to-feature-1-MB-L2-cache-and-AVX-512-support.459845.0.html