PCIe NVMe SSD on PCIe slot-Worth it?

Gen4 nvme on PCIe 3 slot - ROG Forum gen 4 nvme in gen 3 slot slot 2,3,4,5,6 and 7 respectively However, the CPU socket only has 2 X16 GEN 4 CARD for 4 Nvme but it's OK for only one slot genies 3 wishes slot A top end gen4 graphics card with a 16x connector, if installed in a 4x gen3 slot, will only operate at 4x gen3 speeds Keep in mind that any gen3 slot on a

genting slot Whereas the NX supports Gen4 speed I get higher sequential rw speeds on the Xavier NX But for random rw the IOPS is lower