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

What Are PCIe Slots Used For? - Devices and Expansion does it matter which pcie x16 slot i use Used Tower & Mini PCs: desktop-pc Used Grade A Laptops does hawaiian gardens casino have slot machines No matter the size of the PCIe slot or card, the key For example, a PCIe x1 card will fit in any PCIe x4, PCIe x8, or PCIe x16 slot

does it matter which gpu slot i use PCIe Speed?