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by Epic (880 points)

1 Answer

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by Mythic (1.6k points)

Different generations of PCIe slots mainly differ in speed and bandwidth:

Data Transfer Speeds:

   PCIe 1.0: 250 MB/s per lane

   PCIe 2.0: 500 MB/s per lane

   PCIe 3.0: 1 GB/s per lane

   PCIe 4.0: 2 GB/s per lane, etc.

Bandwidth:

PCIe 1.0 x16: 4 GB/s total

PCIe 2.0 x16: 8 GB/s total

PCIe 3.0 x16: 16 GB/s total

PCIe 4.0 x16: 32 GB/s total, etc.

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