PCI-SIG launched its PCI Express 7.0 specification for members, offering twice the transfer rates compared to PCI-E 6.0.
PCI-E 7.0 Version 0.9 is PCI-SIG's Final Draft for its Members; Ready for Review
Peripheral Component Interconnect Express is one of the most widely used interfaces across client and data center systems. On mainstream computers, we have PCI-E 5.0, the most recent one that was released three years ago and unlocks significantly higher bandwidth for expansion cards such as graphics cards.
However, its developers, PCI-SIG (Special Interest Group), are almost ready with its latest PCI-Express 7.0. If you are wondering where PCI-E 6.0 is, then you need to know that it was released in 2022. It hasn't yet made it to the mainstream motherboards since it takes time to adopt newer standards, and we don't even have such GPUs that can leverage PCI-E 6.0's full potential.
We are hardly able to leverage the full potential of PCI-E 5.0 even though we finally have PCI-E 5.0 compatible GPUs such as RTX 50 series and RX 9070 series GPUs. Nonetheless, PCI-SIG's aim is to deliver a newer standard every three years, doubling the transfer speeds for unlocking more bandwidth for high-performance GPUs and accelerators.
The PCI-E 7.0 was introduced back in 2022 and, after exactly three years, PCI-SIG has released the new standard version 0.9. The company introduced version 0.7 in January this year but version 0.9 is the final draft and is available to its members for review. It will still take some time to enter the mainstream market. We don't know how much time exactly it will take to see PCI-E 7.0 on mainstream motherboards, but since we have just started with PCI-E 5.0, we are at least a few years away.
As for its specifications, the PCI-Express 7.0 doubles the transfer rate compared to PCI-E 6.0. So, we are seeing 128 GT/s vs 64 GT/s on the latter. For comparison, the PCI-E 5.0 brings 32 GT/s of transfer rate, and PCI-E 7.0 is quadrupling that speed. The PCI-E 7.0 has a lot of similarities with the PCI-6.0 standard, including the utilization of PAM4 signaling for higher data rates. It is also backward-compatible; therefore, users will be able to use devices with interfaces older than PCI-E 7.0.
The key differences include doubling bidirectional bandwidth with PCI-E 7.0 supporting up to 512 GB/s of bandwidth and support for 800G Ethernet and Quantum computing. It will probably be several years before we see such leading technologies, but the platform is almost finalized.
News Source: PCI-SIG
About the author: Sarfraz Khan is a hardware reporter with a focus on PC components and the builder community. With years of experience writing about PC hardware and laptops, his work has been featured on several reputable technology publications. Sarfraz's hands-on experience is demonstrated through his first-person accounts of using and comparing different hardware configurations, providing practical and relatable insights for everyday users. His technical analysis is respected by peers in the enthusiast community and has been cited by specialized hardware sites such as Germany's Igor's Lab.
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