PCI-SIG has confirmed that its upcoming PCI Express (PCIe) 7.0 specification will feature an exciting data rate of 128 GT/s and is targeting a 2025 release. This is exactly twice as impressive as PCIe 6.0, which already boasts a 64 GT/s raw data rate and up to 256 GB/s via x16 configuration among its specifications. Work on PCIe 7.0 continues with planned developments that include PAM4 signaling, improved power efficiency, and backward compatibility with all previous generations of PCIe. PCIe 7.0 is being designed to support both emerging applications (e.g., 800 G Ethernet) and data-intensive markets that include Hyperscale Data Centers and High-Performance Computing (HPC).
PCIe 7.0 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
“For 30 years the guiding principle of PCI-SIG has been, ‘If we build it, they will come,’” said Nathan Brookwood, Research Fellow at Insight 64. “Early parallel versions of PCI technology accommodated speeds of hundreds of megabytes/second, well matched to the graphics, storage and networking demands of the 1990s. In 2003, PCI-SIG evolved to a serial design that supported speeds of gigabytes/second to accommodate faster solid-state disks and 100MbE Ethernet. Almost like clockwork, PCI-SIG has doubled PCIe specification bandwidth every three years to meet the challenges of emerging applications and markets. Today’s announcement of PCI-SIG’s plan to double the channel’s speed to 512 GB/s (bi-directionally) puts it on track to double PCIe specification performance for another 3-year cycle.”
“With the forthcoming PCIe 7.0 specification, PCI-SIG continues our 30-year commitment to delivering industry-leading specifications that push the boundaries of innovation,” said Al Yanes, PCI-SIG President and Chairperson. “As PCIe technology continues to evolve to meet the high bandwidth demands, our workgroups’ focus will be on channel parameters and reach and improving power efficiency.”
PCI-SIG is the consortium that owns and manages PCI specifications as open industry standards. The organization defines industry standard I/O (input/output) specifications consistent with the needs of its members. Currently, PCI-SIG is comprised of over 900 industry-leading member companies. To join PCI-SIG, and for a list of the Board of Directors, visit www.pcisig.com.