GIGABYTE AM4 Motherboards: PCIe 4.0 Ready for Ryzen 3000
These ASUS X470 And B450 Boards Support PCIe 4.0! – Pokde.Net
AMD has decided to block PCIe 4.0 support on all pre-X570 motherboards | PC Gamer
Asus publishes X470 and B450 PCIe Gen 4 compatibility chart - Mainboard - News - HEXUS.net
MSI X470 GAMING PLUS MAX AM4 ATX AMD Motherboard - Newegg.com
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)
AMD X470 Current Gen Motherboards Might Get PCIe 4.0 Upgrade With Ryzen 3000 CPUs | Technology News
PRIME X470-PRO|Motherboards|ASUS Global
Gigabyte Enables PCIe 4.0 on X470 and B450 Motherboards (Updated) | Tom's Hardware
Some ASUS X470 and B450 Motherboards Support PCIe 4.0 | eTeknix
Alleged ASUS X470/B450 PCIe 4.0 Compatibility Table Paints A Confused Picture