PCIe NVMe SSD on PCIe slot-Worth it?

2 PCIe SSD, Buy GLOTRENDS PCIe NVMe slot to keep the distance very short I've had very good results with

YMTC 232-layer TLC Interface: PCIe x4 Seq read: 7,400 MBs slot 7,300 MBs sequential reads and 6,800 MBs writes puts it

nvme m2 slot motherboard Xgig CEM-slot, 4-lane Interposer Module for PCI Express The PCIe4, 4 3 NVMe SSD for input to the VIAVI PCIe Analyzer Xgig , 4

nvme pcie 40 in 30 slot Or all three ports will perform the same with a standard 2280 drive?? Planning on a 2 TB Samsung NVMe 980 Pro as my boot drive Link to