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⇱ PCIe 8.0 Spec Draft 0.5 Released For 1TB/s Bi-Directional x16 Bandwidth - Phoronix


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PCIe 8.0 Spec Draft 0.5 Released For 1TB/s Bi-Directional x16 Bandwidth

Written by Michael Larabel in Standards on 6 May 2026 at 03:53 PM EDT. 47 Comments
The PCI-SIG today held a briefing around PCIe 8.0 that follows the PCIe 7.0 specification that was released to members last June.

While PCIe 7.0 allows for 512 GB/s bi-directionally in an x16 configuration, PCIe 8.0 will once agian double that bandwidth. PCIe 8.0 will deliver a 256 GT/s raw bit-rate and up to 1.0 TB/s bi-directionally in an x16 configuration. Each PCIe major revision continues to double the maximum data rate.

👁 PCIe 8.0 v0.5 spec


Like PCIe 6.0 and PCIe 7.0, PCIe 8.0 will continue with PAM4 signalling. Interestingly, the PCI-SIG with PCIe 8.0 is evaluarting new connector technology but they do aim to maintain backwards compatibility with prior generations of PCIe.

👁 PCIe bandwidth


PCIe 8.0 also hopes to further reduce power consumption through new techniques. Those are the quick takeaways from today's PCI-SIG media briefing with the PCIe 8.0 draft v0.5 specification release.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.