Gigabyte's latest BIOS update enables PCIe 4.0 support on its AMD X470 and B450 motherboards - NotebookCheck.net News
AMD Confirms PCIe 4.0 Not Coming to Older Motherboards (X470, X370, B350, A320)
Micro Center AMD Ryzen 7 5800X 8-Core 16-Thread AM4 Unlocked Desktop Processor with MSI MAG X570S Tomahawk MAX WiFi Motherboard (DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, AC Wi-Fi 6, HDMI)