PCIe x4 vs x16 for single NVMe SSD speed increase?

can you put pcie 4x in 16x slot   Dan can casinos tighten slot machines

You can put anything smaller than the slot in just fine It's the PCI-e bracket screw that really holds things into place I'd get the

However, one key difference will For example, an x8 card can operate in a slot with x8, x16, or x32 lanes Similarly, an x1 card can operate in any PCIe slot  If you go the riser cable route, I would get an x4 to x16 cable if you are using an x4 slot You're perfectly fine using an x1 to x16, but you

mario slot machine You didn't provide 'what' card, some cards work in 16x slot Your 4x slots are PCIe spec bandwidth So Here is AMD's Crossfire compatibility chart to help you understand which cards will work together in crossfire and yes x16 and x4 will work fine