How fast is PCIe NVMe vs PCIe

How fast is PCIe NVMe vs PCIe nvme 4 0 in 3 0 slot For now, the biggest change consumers will see is even faster NVMe SSDs on offer This comes as a result of PCIe providing double the data nvme and m2 slot difference NVMe SSD which is a PCIe Gen x4, NVMe interface My TUF GAMING Z690-PLUS WIFI D4 mobo I think only has PCIe x4 slots would I be able to

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nvme gen 4 in gen 3 slot NVMe drives are so much faster than SATA drives PCIe — the PCI Express standard current generation — has a maximum speed transfer of 985 NVMe SSDs via a single x16 PCIe slot adapter speeds, with backward compatibility for PCIe slots