The final draft of PCIe 6.0 with a maximum bidirectional transfer rate of 256GB / s will be announced, and compatible products will be released as early as 2022

At the time of writing the article, 4.0 was the mainstream for PCI Express (PCIe), which is a type of expansion bus for PCs, and the final draft of the specifications of 'PCIe 6.0', which is two generations ahead of it, was announced. The final PCIe 6.0 specification will be finalized within the next few months, with compatible products expected to hit the market as early as 2022.

PCIe® 6.0 Specification, Version 0.9: One Step Closer to Final Release | PCI-SIG
https://pcisig.com/blog/pcie%C2%AE-60-specification-version-09-one-step-closer-final-release

PCI-Express 6.0 specification only months away • The Register
https://www.theregister.com/2021/10/07/pcie6_specification/

PCIe 6.0 is almost here, with double the data transfer rate | TechRadar
https://www.techradar.com/news/pcie-60-is-almost-here-with-double-the-data-transfer-rate

At the time of writing the article, PCIe 4.0 is the mainstream, but the final specification of PCIe 5.0, which has a maximum transfer speed of 128 GB / s when connected to a data rate of 32 GT / s and x16 lanes, was formulated in May 2019, and in May 2021. The industry's first PCIe 5.0 compatible SSD controller has been announced.

Completed formulation of next-generation standard 'PCI Express 5.0' boasting maximum transfer speed of 128GB / s in both directions --GIGAZINE

by Forrestal_PL

Also, in June 2019, a PCIe 6.0 specification schedule was announced, which states that 'the maximum transfer speed is 256GB / s when connected to a data rate of 64GT / s and x16 lanes, which is twice that of PCIe 5.0.'

Announcement of new standard 'PCI Express 6.0' with a maximum transfer speed of 256GB per second, which is twice the conventional level --GIGAZINE

by Trending Topics 2019

The features shown in version 0.9, the final draft of the specifications announced this time, are as follows.

-Data rate is 64GT / s, which is twice the bandwidth of PCIe 5.0, and up to 256GB / s in x16 configuration.
-Encoding supports PAM4 (4-value pulse amplitude modulation ) signal transmission
Equipped with low-delay forward error correction and a mechanism to improve bandwidth efficiency
· Backwards compatibility with all previous generation PCIe technologies

Al Janus, director and chairman of PCI-SIG, a PCIe standards standards body, has announced that the final specifications for PCIe 6.0 will be released as early as the end of 2021 and at the latest in early 2022. bottom. It usually takes 12 to 18 months from the final specification of PCIe to the actual introduction of compatible products to the market. Therefore, if the final PCIe 6.0 specifications are formulated at the end of 2021, PCIe 6.0 compatible products are expected to hit the market by the end of 2022 at the earliest.

'PCIe 6.0 technology is currently suitable for accelerators, machine learning, or high-performance computing apps that require high I / O bandwidth, and there is a lot of interest from the automotive industry,' said Janus. We are focusing on how to drive PCIe technology in response to increasing bandwidth demands in our ecosystem. '

In addition, when the IT news site The Register applied for coverage of PCIe 6.0 from Intel and NVIDIA, both companies said that they declined to comment.