Pcie x16 slot into multiple x4 slots

If the PCIe slot has x16 mechanical and x8 electrical, you can have 16 cards, but performance gets halved due to half the lanes That is how you can fit a PCIe

For example if we want to play lots of PC games, we can buy an graphics card and install it in

can i buy a slot machine for my home Yes, a PCIe x4 card will function in a PCIe x16 slot The slot will simply use 4 of the 16 lanes available, and the card will work properly

can we book visa slot without i20 However, the 2nd PCIe x16 slot works at PCIe x4 if two GPU are connected means the primary PCIe x16 slot gets 16 lanes and I still have 4 lanes