Dual set up results with one card running at x4 pcie speed

x' denotes how many PCIe lanes the slot has As you will find out in this

Yes, you can plug into 16x slot, but off course it will run in 4x speed Some motherboard even let you plug 4x card into 1x, but it will

can you run ddr4 in a ddr5 slot If you have the option of multiple slots where at least one supports PCIe, it's worth considering your secondary slot for an SSD upgrade When combined with

can you run pcie 40 in 30 slot For the sake of completeness: Unless you're doing weird things like bifurcating a slot and using it for multiple devices (which requires