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posted by janrinok on Thursday June 23, @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: 2) by takyon on Thursday June 23, @03:45PM (1 child)

    by takyon (881) <takyonNO@SPAMsoylentnews.org> on Thursday June 23, @03:45PM (#1255603) Journal

    https://www.pcworld.com/article/704893/the-first-pcie-gen-5-0-ssds-are-almost-ready-for-consumers.html [pcworld.com]
    https://arstechnica.com/gadgets/2022/02/pcie-5-0-ssds-promising-up-to-14gb-s-of-bandwidth-will-be-ready-in-2024/ [arstechnica.com]

    PCIe 5.0 support will spread fast in the next year on the latest Intel and AMD (AM5) motherboards. SSDs will be the first component to make use of it, and won't be too far from maxing out PCIe 5.0 x4 (15.754 GB/s).

    It could take a long time for PCIe 7.0 to come to consumers, but for example PCIe 7.0 x1 should allow for up to 121 Gbps for an Ethernet NIC with 1x 100 Gbps and some other ports.

    SSDs are going to start to have cooling problems, and motherboards with PCIe 6.0 and above could need expensive design changes. PCIe 5.0 seems to be well handled on AMD's side by using dual chipsets so signals don't have to travel as far.

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  • (Score: 0) by Anonymous Coward on Thursday June 23, @08:16PM

    by Anonymous Coward on Thursday June 23, @08:16PM (#1255672)

    > x1 should allow for up to 121 Gbps

    I wonder if the processors can keep up (yeah, DMA is a thing, but there is still a lot that has to go through the processor).

    I guess the low power ARM stuff can forever stick with pcie gen 3 and gen 2.