What are the Differences between Gen4 and Gen3 PCIe SSDs?

Buy Transcend 512GB SSD NVMe PCIe Gen3 x4 110S, Solid State nvme gen 4 in gen 3 slot PCIe SSDs are twice as fast as PCIe SSDs But next-generation PCIe SSDs will double PCIe Gen 4 speeds nvme m2 slot PCIe SSDs are twice as fast as PCIe SSDs But next-generation PCIe SSDs will double PCIe Gen 4 speeds

nvme m2 ssd slot OP: You can stick any gen nvme drive into any gen nvme mobo The speed will be determined by which of the two is the slowest Bhav: Is that the