Confused by PCIE ! Is my 'budget' AlderLake 6500XT build okay?

Even though the PCIe 4 slot is backward compatible with the Gen 3 SSD, the fact that you're connecting it to a Gen 4 slot will not increase data

Like USB, PCIe is forward compatible This means that a device which requires PCIe will work in a PCIe or PCIe slot Slot Size Lane Width

candyland slot Your PCIe card will run at the lowest generation present So if you put a PCIe card in a PCIe slot, you'll get PCIe performance

canyon 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