Corsair H170i Elite Capellix XT review
Forspoken: PC performance graphics benchmarks
ASRock Z790 Taichi review
The Callisto Protocol: PC graphics benchmarks
G.Skill TridentZ 5 RGB 6800 MHz CL34 DDR5 review
Be Quiet! Dark Power 13 - 1000W PSU Review
Palit GeForce RTX 4080 GamingPRO OC review
Core i9 13900K DDR5 7200 MHz (+memory scaling) review
Seasonic Prime Titanium TX-1300 (1300W PSU) review
F1 2022: PC graphics performance benchmark review
PCIe 5.0 Going to 32GT/s - Spec Available to Members
Still waiting on PCI-Express 4.0 eh? Well, PCI-SIG Developers today announced 32GT/s as the next progression in speed for the PCIe 5.0 architecture, targeting high-performance applications.
Slated for completion in 2019, the specification development is well underway with Revision 0.3 already available to PCI-SIG member companies.
“In our 25-year history, PCI-SIG has maintained its commitment to our rigorous specification development process, while delivering specifications that are in lock-step with industry requirements for high-performance I/O,” said Al Yanes, PCI-SIG Chairman and President. “PCIe 5.0 technology is the next evolution that will set the standard for speed, and we are confident that its 32GT/s bandwidth will surpass industry needs.”
The preceding PCIe 4.0 specification is designed with key functional enhancements that future-proof the PCIe architecture design, thereby accelerating future specification development. This undertaking, along with improved silicon design processes, serves as the foundation for the PCIe 5.0 specification.
“We are pleased to see the PCI-SIG continue to evolve this interface technology to enable NVMe SSDs for the enterprise and data center to leverage the scalability of the PCIe architecture, both in higher bandwidth and lower latency.”
For high-end networking like 400Gb Ethernet solutions and dual 200Gb/s InfiniBand, the PCIe 5.0 architecture operates at full duplex and provides up to 128GB/s in bandwidth. The higher bandwidth will serve accelerator and GPU attachments, as well as constricted form factor applications needing to increase channel width.
“With the onset of Big Data, high-performance applications and the arrival of next generation non-volatile memories, storage devices have a voracious appetite for increasing performance,” said Amber Huffman, President of NVM Express, Inc. “We are pleased to see the PCI-SIG continue to evolve this interface technology to enable NVMe SSDs for the enterprise and data center to leverage the scalability of the PCIe architecture, both in higher bandwidth and lower latency.”
schmidtbag
Senior Member
Posts: 7163
Joined: 2012-11-10
Senior Member
Posts: 7163
Joined: 2012-11-10
#5440330 Posted on: 06/08/2017 04:31 PM
I think it's more about setting the specs in stone rather than something anyone actually intends to implement. It's not uncommon for companies to invest in technologies they have no intention to use for a long while, though, usually that's for anticompetitive reasons - I'm not sure why PCI-SIG is doing this. Maybe to prevent either Intel or AMD from being lazy and/or pushing their own agenda?
Not like it matters anyway. To my knowledge, nothing saturates 3.0 @ 16x. I also don't know of any M.2 SSDs that saturate the 4x lanes they get.
What does intrigue me is the 5.0 1x slot will have the same amount of bandwidth as the 16x from gen 1.
Any idea when we'll start seeing PCIe 4.0 motherboards? I don't believe that Intel is introducing them with CoffeeLake and I haven't heard anything from AMD about Zen 2 and them either.
I think it's more about setting the specs in stone rather than something anyone actually intends to implement. It's not uncommon for companies to invest in technologies they have no intention to use for a long while, though, usually that's for anticompetitive reasons - I'm not sure why PCI-SIG is doing this. Maybe to prevent either Intel or AMD from being lazy and/or pushing their own agenda?
Not like it matters anyway. To my knowledge, nothing saturates 3.0 @ 16x. I also don't know of any M.2 SSDs that saturate the 4x lanes they get.
What does intrigue me is the 5.0 1x slot will have the same amount of bandwidth as the 16x from gen 1.
Ricepudding
Senior Member
Posts: 856
Joined: 2017-02-17
Senior Member
Posts: 856
Joined: 2017-02-17
#5440346 Posted on: 06/08/2017 05:00 PM
Not like it matters anyway. To my knowledge, nothing saturates 3.0 @ 16x. I also don't know of any M.2 SSDs that saturate the 4x lanes they get.
if i remember correctly, even the GTX1080 did not fully saturate 2.0 @ 16x, don't know about the titan xp or 1080ti they may do. i know we was getting close to it... so 5.0 is insane, i think these willl be more useless for the x1/x4 pcie lanes which can be saturated as you stated by m.2 and PCIE SSD cards.
Find it ammusing they speak about 5.0 when 4.0 is still not in the mainstream... or anywhere far as i have heard (any servers or super computers with it maybe?)
Not like it matters anyway. To my knowledge, nothing saturates 3.0 @ 16x. I also don't know of any M.2 SSDs that saturate the 4x lanes they get.
if i remember correctly, even the GTX1080 did not fully saturate 2.0 @ 16x, don't know about the titan xp or 1080ti they may do. i know we was getting close to it... so 5.0 is insane, i think these willl be more useless for the x1/x4 pcie lanes which can be saturated as you stated by m.2 and PCIE SSD cards.
Find it ammusing they speak about 5.0 when 4.0 is still not in the mainstream... or anywhere far as i have heard (any servers or super computers with it maybe?)
schmidtbag
Senior Member
Posts: 7163
Joined: 2012-11-10
Senior Member
Posts: 7163
Joined: 2012-11-10
#5440354 Posted on: 06/08/2017 05:23 PM
if i remember correctly, even the GTX1080 did not fully saturate 2.0 @ 16x, don't know about the titan xp or 1080ti they may do. i know we was getting close to it... so 5.0 is insane, i think these willl be more useless for the x1/x4 pcie lanes which can be saturated as you stated by m.2 and PCIE SSD cards.
Find it ammusing they speak about 5.0 when 4.0 is still not in the mainstream... or anywhere far as i have heard (any servers or super computers with it maybe?)
From what I recall, I think I remember seeing a benchmark of the 1080Ti on various PCIe slots, and you lose a few FPS on gen 2 on some tests. It's only maybe a 2% performance loss though, so I'd say gen 2 has held on real strong.
I know there are some SSDs out there that can saturate the bandwidth much easier.
To me, the real interest of newer PCIe generations is the performance for the 1x and M.2 slots. We're approaching times where it should be possible to comfortably do 1080p gaming on a 1x slot. There are also products like this:
http://amfeltec.com/products/flexible-x4-pci-express-4-way-splitter/
where if you don't need all the extra bandwidth for a single card, you can take advantage of more expansion cards instead. I'd be really interested to see if there's a splitter out there that could, for example, convert a single gen 3.0 16x slot into two 2.0 16x slots.
if i remember correctly, even the GTX1080 did not fully saturate 2.0 @ 16x, don't know about the titan xp or 1080ti they may do. i know we was getting close to it... so 5.0 is insane, i think these willl be more useless for the x1/x4 pcie lanes which can be saturated as you stated by m.2 and PCIE SSD cards.
Find it ammusing they speak about 5.0 when 4.0 is still not in the mainstream... or anywhere far as i have heard (any servers or super computers with it maybe?)
From what I recall, I think I remember seeing a benchmark of the 1080Ti on various PCIe slots, and you lose a few FPS on gen 2 on some tests. It's only maybe a 2% performance loss though, so I'd say gen 2 has held on real strong.
I know there are some SSDs out there that can saturate the bandwidth much easier.
To me, the real interest of newer PCIe generations is the performance for the 1x and M.2 slots. We're approaching times where it should be possible to comfortably do 1080p gaming on a 1x slot. There are also products like this:
http://amfeltec.com/products/flexible-x4-pci-express-4-way-splitter/
where if you don't need all the extra bandwidth for a single card, you can take advantage of more expansion cards instead. I'd be really interested to see if there's a splitter out there that could, for example, convert a single gen 3.0 16x slot into two 2.0 16x slots.
Fox2232
Senior Member
Posts: 11808
Joined: 2012-07-20
Senior Member
Posts: 11808
Joined: 2012-07-20
#5440384 Posted on: 06/08/2017 06:56 PM
if i remember correctly, even the GTX1080 did not fully saturate 2.0 @ 16x, don't know about the titan xp or 1080ti they may do. i know we was getting close to it... so 5.0 is insane, i think these willl be more useless for the x1/x4 pcie lanes which can be saturated as you stated by m.2 and PCIE SSD cards.
Find it ammusing they speak about 5.0 when 4.0 is still not in the mainstream... or anywhere far as i have heard (any servers or super computers with it maybe?)
It is not about saturation of bandwidth or need to have higher bandwidth per GPU (You do not anyway). It is about selling higher-end platform.
Why would you pay extra for 28/44 PCIe 3.0 lanes when you can get around same bandwidth from 16 PCIe 4.0 lanes?
Think about it. PCIe 2.0 x16 is comparable to PCIe 4.0 x4.
if i remember correctly, even the GTX1080 did not fully saturate 2.0 @ 16x, don't know about the titan xp or 1080ti they may do. i know we was getting close to it... so 5.0 is insane, i think these willl be more useless for the x1/x4 pcie lanes which can be saturated as you stated by m.2 and PCIE SSD cards.
Find it ammusing they speak about 5.0 when 4.0 is still not in the mainstream... or anywhere far as i have heard (any servers or super computers with it maybe?)
It is not about saturation of bandwidth or need to have higher bandwidth per GPU (You do not anyway). It is about selling higher-end platform.
Why would you pay extra for 28/44 PCIe 3.0 lanes when you can get around same bandwidth from 16 PCIe 4.0 lanes?
Think about it. PCIe 2.0 x16 is comparable to PCIe 4.0 x4.
Click here to post a comment for this news story on the message forum.
Senior Member
Posts: 8093
Joined: 2014-09-27
Any idea when we'll start seeing PCIe 4.0 motherboards? I don't believe that Intel is introducing them with CoffeeLake and I haven't heard anything from AMD about Zen 2 and them either.