PCIe 3.0 could be crippling AMD's RX 5500 XT performance - Neowin
AMD Radeon RX 5700 Review | bit-tech.net
Radeon™ RX 5700 XT GAMING 8G (rev. 2.0) Key Features | Graphics Card - GIGABYTE Global
PCIe 4.0 vs PCIe 3.0 on RX 5700 XT (Latest Drivers 2020 Adrenalin 20.2.1) - YouTube
AMD Radeon RX 5700 and 5700 XT review - Game and boost? Clocks and PCIe 4.0
Amazon.com: Gigabyte ASUS AMD Radeon RX 5700 XT PCIe 4.0 VR Ready Graphics Card with 8GB GDDR6 Memory and Support for up to 6 Monitors (RX5700XT-8G) : Electronics
RX 5700 XT PCIe 3.0 vs PCIe 4.0 + Ryzen 3900X - Test in 9 games 1080p and 1440p - YouTube