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 i put a gen 4 m 2 in a gen 3 slot 2 SSD on a motherboard that supports PCI generation 3, it can be significantly faster than a regular SATA drive What Devices Use The Slot? can you connect pcie 40 in 30 slot slots x 5 I'm looking to add 2 pcie gen 4 nvme SSDs I assume one drive will use one of the x16 lanes And the graphics

can you connect pcie 40 in 30 slot What is the difference between Gen4 and Gen3? Why is there such a large price difference? PCIe Gen4 is the fourth generation of the PCI Express specification

candy burst slot png PCIe SSDs are twice as fast as PCIe SSDs But next-generation PCIe SSDs will double PCIe Gen 4 speeds  On regular office and gaming PC motherboards, the slot closest to the CPU will most often be the one that has the highest bandwidth, but always check your