PCIe 3.0 vs PCIe 4.0 performance with NVme
Performance of NVMe under PCIe 3.0 vs PCIe 4.0
One of the major selling point of the AMD 3rd Generation processor and X570 is it’s support of PCIe 4.0. To get the best out of PCIe 4.l0 bandwidth, it is best to pair up the board with a PCIe 4.0 graphics card. Alternatively, a NVME which supports PCIe 4.0 should benefit from the extra bandwidth.
You can read more at this link -> Review of AORUS NVME GEN 4 2TB SSD