What happened now? We’ve only just begun to see companies show off their incredibly fast PCIe 5.0 NVMe SSDs to consumers, but the PCI Special Interest Group (PCI-SIG) is always looking to the next generation. Now he has announced what we can expect in 2025: PCIe 7.0.

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At the PCI-SIG 2022 Developers Conference in California, a future version of the PCIe specification was announced. This happened after the consortium issued the final PCIe 6.0 Specification in January.

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As with previous generations, PCIe 7.0 doubles the bandwidth of its predecessor, from 64 GT/s to 128 GT/s, which equates to up to 512 GB/s bi-directional bandwidth (excluding encoding overhead and header efficiency) through an x16 connection . Looking at it the other way, PCIe 7.0 has four times the bandwidth of PCIe 5.0.

The new specification will use 1b/1b flit mode encoding and is based on the four-level pulse amplitude modulation (PAM4) introduced in PCIe 6.0. The commission writes that it is focused on improving energy efficiency while ensuring low latency and high reliability. As usual, PCIe 7.0 will be compatible with all previous generations of PCIe technology.

PCIe 7.0 is expected to be used for applications such as 800G Ethernet, artificial intelligence, machine learning, and cloud and quantum computing. It will also be useful in data-intensive areas, including hyperscale data centers, high performance computing (HPC), and military/aerospace.

It will be a long time before PCIe 7.0 devices start arriving. The spec should arrive in 2025 and the hardware won’t arrive until 2028, with PCIe 6.0 still to come.

There is a future consumer PCIe 5.0 NVMe SSDsalso promising speeds almost 14 GB/s. They should arrive later this year when the AMD Zen 4 platform comes out with PCIe 5.0 support (Intel Alder Lake also supports this standard). sometime in september.