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posted by janrinok on Thursday June 23 2022, @03:42AM   Printer-friendly
from the PCI-has-the-zoomies dept.

PCI-SIG Announces PCI Express 7.0 Specification to Reach 128 GT/s

PCI-SIG today announced that the PCI Express (PCIe) 7.0 specification will double the data rate to 128 GT/s [gigatransfers per second] and is targeted for release to members in 2025.

PCI-SIG technical workgroups will be developing the PCIe 7.0 specification with the following feature goals:

  • Delivering 128 GT/s raw bit rate and up to 512 GB/s bi-directionally via x16 configuration
  • Utilizing PAM4 (Pulse Amplitude Modulation with 4 levels) signaling
  • Focusing on the channel parameters and reach
  • Continuing to deliver the low-latency and high-reliability targets
  • Improving power efficiency
  • Maintaining backwards compatibility with all previous generations of PCIe technology

Also at Phoronix and Tom's Hardware.


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  • (Score: 1, Interesting) by Anonymous Coward on Thursday June 23 2022, @09:09AM (3 children)

    by Anonymous Coward on Thursday June 23 2022, @09:09AM (#1255545)

    It's gigaTransfers/s referring to the raw bit rate as in without any encoding schemes. It's been used since the first PCIe version.

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  • (Score: 0) by Anonymous Coward on Thursday June 23 2022, @09:45AM (2 children)

    by Anonymous Coward on Thursday June 23 2022, @09:45AM (#1255547)

    can you please confirm: "128GT/s and compression could lead to >"?

    • (Score: 0) by Anonymous Coward on Thursday June 23 2022, @09:47AM (1 child)

      by Anonymous Coward on Thursday June 23 2022, @09:47AM (#1255549)
      idiotic html filters. I chose "plain old text"!

      anyway. "128GT/s and compression ould lead to <<up to 512GB/s>>".
      • (Score: 3, Informative) by Anonymous Coward on Thursday June 23 2022, @10:37AM

        by Anonymous Coward on Thursday June 23 2022, @10:37AM (#1255552)

        No compression necessary. 128Gt/s * 2bits/t (PAM4) * 16 lanes = 4096Gb/s / 8bits/byte = 512GB/s