UAD-2 Better performance in faster PCI-e slot?

Both the blue slots are PCIe x16 The difference is that the 2nd PCIe 16x is capable of wiring

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

can i put a slot machine in my business If you connect a PCIe GPU to a PCIe slot, you won't be able to cash in on the increased bandwidth and data transfer speed of your PCIe

can you run pcie 40 in 30 slot You should be fine First of all yes a 1x card can run in a 16x slot, though technically your extra slot is a 4x slot that can hold up to a 16x