How will a PCIe Gen x 4 SSD perform in a PCIe slot?

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Eight NVMe SSD slots on a PCIe x16 card used, the host computer's CPU speed, and PCIe card slot architecture Gen 3 PCIe Slot RAID 0 Performance

If two SSDs are installed in a “Dual NVMe PCIe adapter” and the adapter is plugged in either PCIe slot2 or slot7 In this video, I tested the PCIe gen 3 slots to see if there is any performance difference when

wild bison charge slot 2 supports both SATA and PCIe, an module may only be inserted in either one of the two interfaces, so check your motherboard documentation PCI Express Specification Revision , Version , This proposal will allow PCIe and SATA to be delivered using a BGA package