PCIe vs PCIe NVMe SSDs: What's the difference?

will gen 4 nvme work in gen 3 slot   Dan will slot

From a numbers standpoint, it depends on the speed of your gen4 drive; but if your drive is capable of higher transfer speeds than gen3

Gen-4-PCIe-NVMe-M-2-SSDpCSSD-F2000GBMP600 PCIe - GEN 4 Gen 4 SSDs aren't worth it unless you're working with large files and doing a lot of sequential readwrites

roket slot The card physically has an X4 interface, so it could be plugged into an X4, X8, or X16 slot It can still physically only access 4 lanes (else 3 is only supplying 4 lanes, but maybe it'll still work?? An be 2 slots will be PCIe for gen 4 NVMe drives PCIe x4 is