What does the X4 mean in an PCIe Gen X4 NVME drive?

What does the X4 mean in an PCIe Gen X4 NVME drive? m 2 gen 4 in gen 3 slot Corsair MP600 PRO 2TB PCIe Gen 4 NVMe SSDSolid State Drive Corsair 2TB Pay in 3 eligibility is subject to status and approval 18+ UK m2 sata vs nvme slot PCIe , often referred to as PCIe Gen 4 and sometimes just PCI , is the fourth version of a widely used, high-speed interface for

m2 sata vs nvme slot NVMe SSDs, even the last-gen PCIe Gen 3-based NVMe SSDs, are immensely faster than this There's no point in getting a sick Gen 4 NVMe

m2 slot I know I'm replying to an old comment, but maybe someone else sees this I recently got a Gen 4 SSD while still having a Gen 3 motherboard  Kinda odd he spent nearly 4 minutes talking about the difference between Gen 3 and Gen 4