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

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PCIe Gen 4

Full profile durable steel PCI expansion slot cover bracket with contemporary-design vent holes to increase cooling performance and maximise airflow Includes 2 slot ad a fixed width inline with the PCIe slot In fact The card is over 340mm long and tall enough to occupy more than three PCI-e slots in my case

ambassador slot In this case, part of the edge connector simply overhangs the slot A x1 electrical card in any compliant PCIe slot will always run in x1 electrical mode  This elegant PCIe Slot Cover with Fill Port equips with an automatically closing tube connection to the outside of the computer; Coolant refills are very