As we get closer to the Computex launch of AMD’s Ryzen 3000 series and the accompanying X570 chipset more details on it have been leaking out. Today we have more information on the X570 chipset, which is said to feature 40 PCI-Express 4.0 lanes available from the CPU and PCH. This means that Ryzen CPUs and the X570 PCB will split Gen 4.0 lanes over a bunch of I/O.
The leaked datasheet which you see above shows the X570 chipset is classified in the Enthusiast segment with 16 lanes dedicated to PCIe Gen 4 expansion slots (8+4+4), 8 USB 3.1 Gen 2, 4 USB 2.0, 3 SATA ports (4+4+4) and an x4 Gen 4 PCIe Uplink port. The rest of the PCIe Gen 4 expansion would run over the CPU lanes.