Interface
PCIe
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PCIe

Catalogue
  1. 1. Bandwidth
  2. 2. Interface
  • 参考资料
    • Revision Coding Date Rate x1 x4 x16
    1.0 8b/10b 2.5 GT/s 250 MB/s 1 GB/s 4 GB/s
    2.0 8b/10b 5 GT/s 500 MB/s 2 GB/s 8 GB/s
    3.0 128b/130b 8 GT/s 984.6 MB/s 3.94 GB/s 15.75 GB/s
    4.0 128b/130b 16 GT/s 1696 MB/s 7.88 GB/s 31.51 GB/s
    5.0 128b/130b 32 GT/s 3938 MB/s 15.75 GB/s 126.03 GB/s

    Bandwidth

    PCIe 2.0 support 5 GT/s, every lane support transmit 5G bit, but don’t means the transmission rate is 5Gbps for every lane.
    Because the encode scheme is 8b/10b, means transmit 8 bit data need send 10 bit.
    So PCIe 2.0 every lane actual rate is 5 x 8 / 10 = 4 Gbps = 500 MB/s .
    PCIe 3.0 1 lane, 8 x 128 /130 = 7.88 Gbps = 984.6 MB/s.

    Interface

    PCIe x 16, 89 mm, 164 pin

    PCIe x 8, 56 mm, 76 pin

    PCIe x 4, 39 mm,

    PCIe x 1, 25 mm, 14 pin

    参考资料