The two chipsets are differentiated from their current-generation 300-series counterparts in featuring PCI-Express gen 3.0 general purpose lanes. The "Pinnacle Ridge" processors, on the other hand, are expected to be optical-shrinks of current Ryzen "Summit Ridge" silicon to the new 12 nm silicon fabrication process, which will allow AMD to increase clock speeds with minimal impact on power-draw.The Pinnacle Ridge CPUs use the same Socket AM4 as current Ryzen chips and should be compatible with existing motherboards after a BIOS update. AMD plans to offer backwards compatibility until 2020,
Via: TPU