The X570S Riptide, like all X570 boards, features a PCIe 4.0 x4 link between the CPU and the chipset. This compares to a PCIe 3.0 link for B550. This means you’ll get better performance if you’re using two PCIe 4.0 drives, or multiple PCIe expansion cards. This factor alone may be the clincher that leads you to consider the X570 chipset over otherwise similarly performing B550 boards.
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