Although PCIe 5.0 SSDs are just now coming onto the scene, PCIe 4.0 drives are still very much relevant and will continue to be some of the best SSDs for at least a year. Among PCIe 4.0 SSDs, Samsung’s 990 Pro has reigned as the fastest SSD (or at least tied as the top with WD’s SN850X), and I was pretty confident that it would remain that way forever when I reviewed it back in April.