ASUS Radeon RX 5700 XT PCIe 4.0 VR Ready Graphics Card with 8GB GDDR6 Memory and Support for up to 6 Monitors (RX5700XT-8G) GPUs / Video Graphics Cards - Newegg.com
AMD Radeon RX 5700 XT And RX 5700 Bring 7nm PCIe 4.0 Gaming Muscle To Enthusiasts | HotHardware
5700XT Graphics card is running at PCI-Express x4 v2.0 when gpu-z says it supports PCI-Express x16 4.0 : r/AMDHelp