Saturday , October 1 2022

The PCIe 5.0 specification was developed this year: the rate doubles the 128GB bandwidth – communication technology


The 4.0 specification was completed in 2017, but it was not until the Ruilong 3000 series of 7nm AMD had support for the consumer platform. Previously, only the supercomputers, high-speed business storage, the network equipment and other products used PCIe.
Technology 4.0.Although the popularity of PCIe 4.0 is still early, the PCI-SIG organization has begun to develop a faster PCIe.
5.0, the signal speed doubled to 32GT / s compared to the current 16GT / s, and the bandwidth can reach 128GB / s. The version 0.9 specification has been announced today and it is expected that the 1.0 version specification will be completed in the first quarter of this year.

According to TH website reports, the PCIe PCI-SIG promotion organization today approved version 0.9 of the PCIe 5.0 specification, which means that it is not far from the official version of the specification and we will soon be able to start marketing the terminal equipment. In general terms, in version 0.4 of the specification, the manufacturer can start designing the terminal product, and version 0.9 of the specification will launch the product.

Compared with the previous standard specifications, the PCIe 4.0 specification came later. The PCIe 3.0 specification was introduced in 2010. The introduction time of PCIe 4.0 is 7 years, so the life of the PCIe 4.0 specification can be very short, especially some. Providers have started designing physical devices PCIe 5.0 PHY.

The PCI-SIG organization expects the two standards to coexist for a while. PCIe 5.0 is mainly used for high performance devices with higher performance requirements, such as GPUs for AI, network devices, etc., which means that PCIe 5.0 is most likely to appear on the data . PCIe 4.0 can be used in central, network and HPC environments, while devices such as desktops that do not have the same bandwidth requirements.

For PCIe 5.0, the signal speed has increased from 16GT / s to 32GT / s in PCIe 4.0, still using 128/130 encoding, and x16's bandwidth has increased of 64GB / s 128GB / s.

In addition to doubling the bandwidth, PCIe 5.0 provides other changes that change the electrical design to improve signal integrity, backward compatibility with PCIe and much more. In addition, PCIe 5.0 has designed new standards that reduce latency and reduce the signal attenuation at long distances.

The PCI-SIG organization expects to complete the 1.0 version of the specification in the first quarter of this year, but it can set standards but it does not control when it will enter the market in the market. It is expected that the first PCIe 5.0 devices will be presented this year and there will be more products for 2020. It appeared.


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