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

What does the X4 mean in an PCIe Gen X4 NVME drive? pcie 4 0 in 3 0 slot With PCIe Riser and Front IO USB-C Cable With GPU Slots GPU 140×325×65 CPU Maximum Height 48mm GPU Slots pcie 40 gpu in 30 slot Power Phase, Chipset, Memory, Slots, Multi-GPU, Graphics, Audio, Network, RAID 13, Intel X299, 8 x DDR4 DDR4 4200+, 4 x PCIe x16 1 x , AMD 3

pcie 40 gpu in 30 slot By itself, PCI-Express x4 seems like plenty of bandwidth, 8 GBs per direction, until you realize that you also need a PCIe Gen capable

pcie 2 slot To be specific, a PCIe slot has an 8 GTs transfer rate per lane, while a PCIe slot has a 16 GTs transfer rate per lane Moreover, the 2 PCIe 3 and 4 drives look identical from the outside The difference is the standard in the way they connect to the motherboard, and thus, the