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

What is the difference between PCIe Gen 3 and PCIe Gen 4? slot pcie x4 2 is a PCIe x4 device Game Capture HD60 Pro In this example, HD60 Pro works in any slot, as it requires a minimum of x1 slot size and speed slot chilli heat I run GPU-Z and under Bus Interface I see this: PCI-E x16 @x4 own Asrock 990 FX Extreme 3 and

slot chilli heat PCIe slots come in different sizes, denoted by their lane count The numbers x4, x8, and x16

slot prep dental Every PCIe slot supports its own number of CPU lanes X16 has 16 Lanes support, X8 has 8 Lanes support, X4 has 4 lanes support and x1 has PCIe Gen4 x4 Slot to SFF-8644 Passive Adapter Part #:, PCI-AD-x444-04-G4 Description: Gen4 PCIe x4 slot – SFF-8644 Passive Adapter Minimum Quantity: 1 List