Our recommendation for the Ryzen 7 5700X CPU would be the X570 chipset, since it provides the most functionality as well as full PCIe 4.0 support. Additionally, the Ryzen 7 5700X CPU is capable of supporting PCIe 4.0 as well. There is, however, only one chipset with PCIe 4.0 lanes on it, which is the X570.