which pci slot is best for graphics card: Which PCIE slot in one GPU configuration - ROG Forum. Mainboard Asus PRIME Z790 - P - CSM DDR5. motherboard - Is PCI Express x4 faster or slower than a standard ... .
If your motherboard has more than one
PCI Express slot, it may not be immediately clear which one is going to be the best for your graphics card to use.
CPU: 1 x PCI Express x16
slot, supporting PCIe 5.0 and running at x16 (PCIEX16) * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
Does a Graphics Card Have to Go in the First PCI-E Slot?. You may have wondered
which slot you're supposed to install a graphics card into on a motherboard when there's more than one slot.