PCI-SIG Announces PCIe 6.0 Specification

by Hilbert Hagedoorn on: 06/19/2019 06:35 AM | source: | 30 comment(s)

PCI-SIG today announced that PCI Express 6.0 technology will double the data rate to 64 GT/s while maintaining backward compatibility with previous generations and delivering power efficiency and cost-effective performance.

The PCI SIG announced PCI Express 6.0 on Tuesday, scheduled to bring I/O transfer rates of 256 gigabytes per second (GBps) in a few years. Targeted for release in 2021, the PCIe 6.0 technology will double the data rate to 64 GT/s and up to 256 GB/s via x16 configuration while maintaining backward compatibility with previous generations.

PCIe 6.0 Specification Features

Delivers 64 GT/s raw bit rate and up to 256 GB/s via x16 configuration
Utilizes PAM-4 (Pulse Amplitude Modulation with 4 levels) encoding and leverages existing 56G PAM-4 in the industry
Includes low-latency Forward Error Correction (FEC) with additional mechanisms to improve bandwidth efficiency
Maintains backwards compatibility with all previous generations of PCIe technology

"PCI Express technology has established itself as a pervasive I/O technology by sustaining bandwidth improvements for five generations over two decades," Dennis Martin, an analyst at Principled Technologies, said. "With the PCIe 6.0 specification, PCI-SIG aims to answer the demands of such hot markets as Artificial Intelligence, Machine Learning, networking, communication systems, storage, High-Performance Computing, and more."

"Continuing the trend we set with the PCIe 5.0 specification, the PCIe 6.0 specification is on a fast timeline," Al Yanes, PCI-SIG Chairman and President, said. "Due to the continued commitment of our member companies, we are on pace to double the bandwidth yet again in a time frame that will meet industry demand for throughput."PCI-SIG is the consortium that owns and manages PCI specifications as open industry standards. The organization defines industry standard I/O (input/output) specifications consistent with the needs of its members. Currently, PCI-SIG is comprised of over 800 industry-leading member companies. To join PCI-SIG, and for a list of the Board of Directors, visit www.pcisig.com.

The PCIe 6.0 specification is actively targeted for release in 2021.

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Alessio1989
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#5682048 Posted on: 06/18/2019 11:36 PM

Ok...

Undying
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#5682051 Posted on: 06/18/2019 11:38 PM

Did we skip the pcie 5?

SpajdrEX
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#5682056 Posted on: 06/19/2019 12:15 AM

Aura89
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#5682058 Posted on: 06/19/2019 12:36 AM

Did we skip the pcie 5?

I thought we were skipping PCI-E 4, and then we weren't, but it should have been short lived for 5, now 5 looks short lived, or skipping....

Who knows, i wish SATA would be updated, or a new data port that's not M.2, something that can be hooked into drives just like SATA.

HARDRESET
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#5682080 Posted on: 06/19/2019 03:15 AM

o_O

Fox2232
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#5682086 Posted on: 06/19/2019 05:44 AM

Question is: "Since we have seen claims that PCIe 4.0 is unstable outside of well tuned traces on MB after few centimeters. How is going PCIe 5.0 and 6.0 double bandwidth again?"

sverek
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#5682088 Posted on: 06/19/2019 06:12 AM

You can see from graph below that there was big gap between Gen3 and Gen4.
PCI-SIG is in hurry to roll out new gens. I don't know if there need or technology/material available to actually support it for mass production.

IMO, even Gen4 right now seems a bit rushed. Don't feel good about prices on X570 chipsets for Matisse and additional cooling.

Sweeeper
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#5682097 Posted on: 06/19/2019 07:40 AM

So with Pcie 6 can u add a new machine in the slot ?

DmitryKo
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#5682161 Posted on: 06/19/2019 11:46 AM

even Gen4 right now seems a bit rushed.

PCIe 6.0 would be great for multi-GPU and NVMe storage on the desktop, as well as NUMA nodes and CCIX (multi CPU/GPU cache coherency) and multi-port Terabit Ethernet in the cloud server domain, but that's 2023-2024 in real world products.

Hell, I'm still on a Haswell with PCIe 2.0... might upgrade to Broadwell to better utilise my brand new x4 NVMe SSD disk.

Ricardo
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#5682245 Posted on: 06/19/2019 03:23 PM

I think the specification being done doesn't necessarily means that products will be made?

I can definitively see for example Intel skipping PCIe 4 for 5 and AMD skipping 5 for 6. As long as they keep backward compatibility, there's not a lot of problem.

Chipsets are already pretty much on their edge with PCIe 4, so maybe that as well will hold up further adoption of newer specs.

LEEc337
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#5682270 Posted on: 06/19/2019 05:08 PM

I can't help but feel that these announcements should of came after AMD released their x570 chipset, the misinformed may hold off buying anything pcie 4 knowing 5 and 6 are on the way, I know people on here know it won't make too much difference

RealNC
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#5682276 Posted on: 06/19/2019 05:29 PM

I lost count, honestly. PCIe version... some number? USB whatever point... something?

JamesSneed
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#5682285 Posted on: 06/19/2019 06:09 PM

PCIE 4.0 is already more expensive to implement. You really need a chipset made on a 10nm/7nm process to be efficient enough to not need active cooling. Then you have increased signaling so you need short clean traces which can increase motherboard layers all making it more costly.

PCIE 5.0 is going into servers. Intel and AMD are not bringing PCIE 5.0 into desktops in the near future(5 years or less) as its complete overkill and is very costly right now. PCIE 6.0 is also going to live in server for many years as well.

I suspect once we get to the point of making chipsets using a 3nm GAAFET process we would see PCIE 5.0 in the desktop space as that should get us a nice passively cooled cheap chipset.

Unlike in the past we can make faster interconnects with current technology so we will have some used in servers where it makes the most since and some used in desktops where it makes the most since.

SSD_PRO
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#5682355 Posted on: 06/19/2019 09:22 PM

Maybe it's like web browsers. They just start releasing 4, 5, 6 just months apart and in a few years we have PCIe 42.0. I mean, I'm on Chrome 75. Its pretty much the same as Chrome 28-74?

tsunami231
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#5682421 Posted on: 06/20/2019 02:50 AM

I suspect once we get to the point of making chipsets using a 3nm GAAFET process we would see PCIE 5.0 in the desktop space as that should get us a nice passively cooled cheap chipset.

That will be while before that even happens 7nm still isnt a thing less i missing something

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