Announced in mid-June this yearPCIe 7.0 official specificationsAfter incorporating fiber optic applications into PCIe design scope and announcing that the PCIe 8.0 specification has begun exploration, PCI-SIG announced that the PCI Express (PCIe) 8.0 specification has entered the formal development planning stage and is expected to be open to members in 2028.
Compared to the PCIe 7.0 specification just released this year, the new 8.0 specification is expected to double the transfer speed, reaching 256.0 GT/s (Gigatransfers per second), and in an x16 configuration, it will be able to achieve a bidirectional transfer rate of up to 1TB/s.
The PCIe 8.0 technology roadmap will continue the PCI-SIG's goal of doubling transmission bandwidth every three years. While maintaining backward compatibility, it will also impose stricter technical targets on new connector design, latency, forward error correction (FEC) performance, and reliability.
In addition, PCIe 8.0 will also enhance transmission efficiency at the protocol layer and continue to improve power consumption performance to meet the increasing reliance on high-speed, low-latency transmission in fields such as artificial intelligence, quantum computing, high-speed networks, automotive systems, edge computing, and military aerospace.
Al Yanes, PCI-SIG Chairman and Board Chair, said, "This year's release of the PCIe 7.0 specification marks another milestone in doubling bandwidth, and PCIe 8.0 will continue this tradition, further meeting the higher performance demands of next-generation applications. With the rapid growth of data-intensive applications like AI, the industry's demand for high-bandwidth, low-latency, and cost-effective I/O interfaces remains strong, and PCIe will continue to play a key role."
Reece Hayden, principal analyst at ABI Research, also noted, "While many data centers are just preparing to deploy PCIe 6.0 and are even beginning to evaluate PCIe 7.0, the rapid expansion of data-intensive applications like AI continues to drive high expectations for scalable and high-performance PCIe technology. The introduction of PCIe 8.0 further secures the industry's long-term bandwidth growth needs, ensuring it can continue to meet evolving computing and networking challenges in the years ahead."
In addition to AI and data center applications, the development of PCIe 8.0 will also provide support for high-demand environments such as automotive computing, quantum computing, high-performance computing (HPC), and military/aerospace, demonstrating the core value of PCIe technology in diverse industry applications.
Currently, various PCI-SIG technical groups have begun detailed research and development of PCIe 8.0, covering aspects such as connector design, signal integrity verification, protocol improvements, and power consumption control. While the final standard is still several years away, this announcement clearly signals the direction of PCIe technology evolution over the next decade.
