What is the difference between PCIe Gen 3 and PCIe Gen 4?

What is the difference between PCIe Gen 3 and PCIe Gen 4? can you put pcie 1x in 16x slot If you just modify the slot on the motherboard then you can use the card at x16 speed later in a different system If you can, take a look at canyonlands slot canyons Ever wondered how you can jam a PCIe 16x card like a video card into a PCIe 1x slot? Now

canyonlands slot canyons +1 Also cards must support being inserted into a smaller slot than they're designed for Some slots

candy bar slot However, PCIe x1 cards can fit into all PCIe expansion slots, including x4, x8, and x16 PCIe slots Often it is underestimated what they can do This video explains everything you need to know about PCIe slots, including PCIe slot sizes