https://www.theregister.co.uk/2019/07/08/amd_shipping_7nm_desktop_cpus/ > Ever-ambitious chip maker AMD has started shipping the third generation of its Ryzen CPUs, built on the 7nm process. > These are the first desktop processors to support PCIe 4.0 standard, which potentially doubles throughput to 16 gigatransfers per second when compared to PCIe 3.0 – something that's increasingly important for things like GPUs, dedicated machine-learning accelerators, and non-volatile memory.