PCIe 7.0 is already in development and promises to double the speed

PCIe 7.0 is already in development and promises to double the speed

The PCI-SIG Alliance really wasted no time. To give you an idea, the computer industry is just beginning to implement PCIe 5.0 in its latest devices. But in January of that year, Alliance Formally Develops PCIe 6.0 Final Specification. Now they start working on the next version of the bus, PCI Express 7.0promise Increase transfer rate to an astonishing 512 GB/s (gigabytes per second)!

Importantly, the PCI-SIG Alliance has only just begun to develop the technology. And it will take about 3 years to be officially released. Maybe more time to get your hands on the first computer. However, the organization has set new goals to achieve.

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Bandwidth doubles with each new version

Since PCIe 1.o, the PCI-SIG Alliance has doubled the transfer speed of the bus in the following versions. So far, they haven’t failed once. watch:

  • PCIe 1.0: 8 GB/s;
  • PCIe 2.0: 16 GB/s;
  • PCIe 3.0: 32 GB/s;
  • PCIe 4.0: 64 GB/sec;
  • PCie 5.0: 128 GB/sec;
  • PCIe 6.0: 256 GB/sec;
  • PCIe 7.0: 512 GB/sec.

However, we must point out that this incredible speed is only possible in full-duplex mode, that is, the bus sends and receives data at the same time. Another detail is that only 16 transmission paths (x16) can achieve this speed. With only one transfer path (x1), the speed is 32 GB/s. It’s simply impressive.

In the following table published by the PCI-SIG itself, you can check the speed of each version of the bus according to the number of lanes:

What is a gigatransfer per second?

A closer look should notice the “GT/s” measurements in the table, next to each version’s number.This measure means Gigabit per second. It’s a bit complicated to explain, but I’ll try to keep it simple. GT/s is the maximum bit rate transmitted per second, regardless of its encoding.

One gigabit transfer equals one billion data transfers per second. So encoding converts all this data into one larger packet, making the transmission uniform. The system also helps to be more confident in error detection. All of this makes counting in gigabytes more accurate than gigabytes per second.

But anyway, you don’t need to know all these technical parts to know that PCI Express 7.0 will be very fast, and it will allow video cards and SSDs to be faster than the options we currently have.

PCIe 7.0

One of the assets of the PCI-SIG Alliance is PAM4 (Pulse Amplitude Modulation 4) technology. This technology has even been used in the PCIe 6.0 standard. The technique uses four electrical states to modulate the signal. In previous versions, there were only 2 electrical states. The result of this is more improved data transfer.

Additionally, a statement from the Alliance President, Al Yanes, leads us to believe that the PCIe 7.0 standard will consume less energy than previous standards:

As PCIe technology continues to evolve to meet the demand for high bandwidth, our working groups focus on channel parameters and enabling and improving energy efficiency.“.

When will PCIe 7.0 be available?

The PCI-SIG has a deadline of 2025 for the finalization of the technical specification. But the new standard will likely not begin to be adopted by the industry until 2026. The current industry standard is PCIe 4.0, and the latest devices use the PCIe 5.0 standard. Let’s not forget PCIe 6.0, which hasn’t even started to be adopted by the industry.

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