PCIe 4.0: Everything you need to know, from specs to compatibility to caveats

AMD’s new Ryzen platform ushers in the first big changes to PCIe since 2010.

Come July, AMD gets to hoist the trophy in the race to the next-generation PCIe 4.0 interface for desktop PCs. By combining its upcoming Ryzen 3000 CPUs, Radeon RX 5700 graphics, X570 chipset, and a new spate of PCIe 4.0 SSDs, consumers will be able to build or buy the first PCIe 4.0-based PC.

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https://www.pcworld.com/article/3400176/pcie-40-everything-you-need-to-know-specs-compatibility.html