Understanding the use of PCI-E lanes with my CPU

They work fine So if you think you are short of PCI-e slots, you may not be A shorter PCIe card works fine in a longer slot

Don't want to use risers Five or more pcie slots with open backs on a motherboard There are several different motherboards in Epyc,

which slot Which means I'd have the first expansion slot free on the Z840 motherboard, and could use it for an UI-only GPU card (yeah, it's just x4

which slot machines pay the best If your CPU only provides 16 lanes and your graphics card is using all of them, you wont be able to add any other cards in other slots without