When Radeon RX 6600 XT launched with an interface limited to PCI-Express 4.0 x8 lots of discussion emerged about how AMD crippled the bandwidth, and how much it affects the gaming experience. In this article we're taking a close look at exactly that, comparing 22 titles running at PCIe 4.0, 3.0, 2.0 and even 1.1. Frametimes are included, too.