PCIe Gen 4 vs Gen 3: Do you need to spend extra on SSDs?

When you look up the processor specs on the Intel website, under the Expansion Options section you will find the PCIe generation for the

2 card in your motherboard's second slot I might also replace the boot SSD with a larger one If I was flush with cash, I'd make them both

pcie 1 slot PCIe is backward compatible It's also forward compatible So, you can insert PCIe expansion cards into PCIe slots, but your data

pcie 4 slot When installed in a Windows PC's PCIe slot with four SSDs formatted in a RAID 0 configuration, the card is capable of 8,500 MBs transfers Aggregate