What is PCI Express? Do PCIe lanes, slots, and versions matter?

pcie x16 expansion slot   Dan pcie slot bracket

So in the first scenario, both physical x16 slots only provide 8 lanes, in the second scenario the first x16 slot provides 16 lanes (for full

Card capacity and size Mac Pro has seven PCIe slots that accept many different types of PCIe cards: Slot 1: gen 4, up to x16 Card capacity and size Mac Pro has seven PCIe slots that accept many different types of PCIe cards: Slot 1: gen 4, up to x16

slot filling PCIe x16 slot, but expose two additional x8 slots One of the smaller slots should accept the HBA, while the other one PCIe x16 is your 16-lane PCI Express slot, or at least your largestlongest PCI Express slot It is the most high-bandwidth, high-performance expansion slot