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

what is a pcie x1 slot used for   Dan what is a 3 slot graphics card

It is a card slot It's a card slot for cards that don't need a huge connection bus

PCIe buses can support 1x, 4x, 8x, and 16x lanes PCIe has an effective transfer speed of up to 985 MBs per lane which means there is a potential PCIe x1 slots replace the standard PCI port and are about 1 inch long They move data on and off the motherboard at up to 250 MBps in

slot drain sink detail I explain in this video the Types of PCIe slots, how you can identify them, and also what their Top uses of the PCIe 1x slot on your motherboard · Port Expansion Cards One of the most common uses of the 1x slots is for port expansion cards