PCIe 7.0 connects the components of your PC at speeds of up to 512 GB/s…

The 7th version of the standard, which regulates the transmission between various electronic components such as graphics cards or SSDs, has been completed. And promises speeds of up to 512 GB/s on 16 lines!

The main protocol for connecting our computer components promises a fast future. Very fast. While it supports PCI Express 5.0 thanks to 12e Generation of Intel Core processors and the PCI Express 6.0 standard was just finalized at the beginning of the year, PCI Express 7.0 is now showing the end of its flagpole. Scheduled for 2025 at best (there’s always time between the announcement and finalization of a standard), PCIe 7.0 won’t see its first products until 2028… at best!

Originally introduced by Intel in 2003, the PCI Express standard (referred to as PCIe) originally aimed to merge AGP graphics ports and PC PCI ports, slots into which “daughter” cards were pushed. The standard more than won its bet, as it is at the heart of data transmission for billions of devices, from smartphones to laptops to new generation memory cards (CF Express, etc.). It must be said that there are people behind this standard. Since its invention by Intel, the body that has become the PCI-SIG now has 900 member companies encumbering the consortium. A consortium of engineers who never fail to double the performance of the standard with each new release.

512 GB/s over 16 lanes

Regularly when new standards are published, the engineers of the PCI-SIG consortium show impeccable work to ensure an ever-increasing data flow. While x8 PCIe 4.0 lanes (the currently most established standard) are currently required to transfer 32 GB/s between two components, PCIe 7.0 will do this on a single lane. And in extremely bandwidth-intensive applications – graphics cards, SSDs – this throughput can be parallelized on up to x16 lanes to reach 512 GB/s!

Developments in the speeds of the PCIe standard.
Developments in the speeds of the PCIe standard. /PS

Be careful though: PCI Express is bi-directional, as is the advertised bandwidth. This means that the 512 GB/s over 16 lanes applies to both lanes (in and out). With unidirectional data throughput, for example from one SSD to another during a copy, the maximum throughput is 256 GB/s. Which isn’t bad!

Interestingly, PCI-SIG works on both speed and efficiency. A single lane sending 32Gb/s consumes less power than x8 PCIe 4.0 lanes while driving. Enough to shave a few precious watts in applications where flow rates don’t or don’t progress.

Guaranteed backwards compatibility

PCI Express slots on a motherboard.
PCI Express slots on a motherboard.

Another achievement of PCI-SIG is that PCIe 7.0 will be backward compatible with all previous standards. Yes, on paper, if the physical forms of PCIe cards endure and we continue to add graphics cards to our tower PCs, a 2004 PCIe 1.0 graphics card will theoretically be compatible with your 2030 PCIe 7.0 motherboard. But there’s a better chance your operating system (or requirements!) will be incompatible with that old card than the physical elements between them.

This backwards compatibility — which today allows you to pop an old PCIe 3.0 SSD into a modern tower with an Intel Alder Lake processor without even thinking about it — is one of the good examples of the world of tech standards.

Source :

PCI GIS

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