[TPU] PCI-SIG Announces PCIe 6.0 Specification - Page 3 - Overclock.net - An Overclocking Community

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[TPU] PCI-SIG Announces PCIe 6.0 Specification

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post #21 of 33 (permalink) Old 06-19-2019, 02:08 PM
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Quote: Originally Posted by Gilles3000 View Post
A bunch of gen4 SSD's have been announced already, will probably go on sale at the same time the X570 motherboards do.

Speeds up to 5000MB/s out of a tiny M.2 drive is pretty insane.
But that's only for sustained reads right? It doesn't help random reads/writes does it?
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post #22 of 33 (permalink) Old 06-19-2019, 09:09 PM
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Quote: Originally Posted by KyadCK View Post
So... a 400gbps network card needs a 6.0 x4 (5.0 x8, 4.0 x16).

Being able to take our existing 5GB/s PCI-e 4.0 x4 NVMe SSDs and putting them on 6.0 x1s would allow of much larger storage arrays with less hardware.

Infiniband is already looking at faster than terabit speeds.

AI/Learning GPUs and CPUs need interconnects this fast, which is why NVLink and Infinity Fabric exist in this setting.

Super computers as a whole, combining all of the above.
And what is the observable difference for the average consumer?

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post #23 of 33 (permalink) Old 06-19-2019, 09:19 PM
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Quote: Originally Posted by bigjdubb View Post
Backwards compatibility does get taken too far some times. Do we really need to keep putting PS\2 ports on consumer motherboards? Sometimes you just have to shove those who don't want to move forward.
This has been addressed many time by MOBO makers where they are needed for industrial and business applications and for some 3rd world countries. It's cheaper to put them on in most cases then taking them off. That said on high end boards I would not mind them going away and the space used for USB-C

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post #24 of 33 (permalink) Old 06-20-2019, 03:48 AM
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Quote: Originally Posted by philhalo66 View Post
we arent even close to maxing out 3.0 why do we need 6?
Network, storage, professional GPUs or acceleration hardware, have been maxing PCIE 3.0.
This is why for example NVLink exist. It needs to exist because PCIE 3.0 doesn't have the bandwidth nvidia need for example to transfer data to their AI/data center cards.


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post #25 of 33 (permalink) Old 06-20-2019, 05:25 AM
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10GBe on 1 lane. Yes please...
We will need faster lanes for USB 4.0. we are already limited in the number of 3.1 port's a board has.

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post #26 of 33 (permalink) Old 06-20-2019, 05:32 AM
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2021 seems a little soon don't ya think?

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post #27 of 33 (permalink) Old 06-20-2019, 06:07 AM
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Quote: Originally Posted by Mhill2029 View Post
2021 seems a little soon don't ya think?
They are not releasing it in 2021. Only the full specs and finished standard will be available in 2021.
It will still take a couple of years for it to come to mainstream.

Just for comparison, PCIE 4.0 early standard was announced at the end of 2011 (almost 8 years ago, and remember that PCIE 3.0 first motherboards only came in 2011), but was officially announced as finished standard mid 2017, 2 years ago. And we only get it now with AMD new motherboards (while AMD first PCIE 3.0 was in 2013, just 6 years ago).
PCIE 5.0 full standard was officially released this year, and we might get server CPUs and chipsets at the end of 2021 (about 2 years after).
So if PCIE 6.0 will actually released in 2021, maybe it will show up in 2023-2024.

And announcing the standard is barely half way, considering even PCIE 4.0 took awhile to sort out manufacturing wise, because of the added bandwidth, power and heat.

PCIE 5.0 and 6.0 are mostly increasing chipset ability (like adding cache to improve performance), improving the encoding (like changing to NZR in 5 and PAM in 6), etc.
But we still won't know the benefit in some applications. And some of the technologies putting directly into the CPU (like PAM), might take a bit for intel/amd/arm to sort out.


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post #28 of 33 (permalink) Old 06-20-2019, 09:11 AM
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Quote: Originally Posted by 8051 View Post
This is the kind of thing I'm most interested in. Why is the Radeon 5700 XT sporting GDDR6 memory instead of HBM? I hope this is the 2080Ti slayer.
Because it is a mid-range card? The 580X didn't get HBM either.

It is not a 2080ti slayer. It ties with a 2070.

Quote: Originally Posted by m4fox90 View Post
And what is the observable difference for the average consumer?
The IO Bridge in Epyc needs to be PCI-e 4.0, so now you get PCI-e 4.0 because TR and Ryzen are made from the same design. When 5.0 and 6.0 become a thing, the same thing will happen.

Having a PCI-e 4.0 x4 to the chipset helps because a single PCI-e 3.0 x4 down there really sucks when you have 20x that in devices connected to it; SATA, USB, NVMe drives, etc. Helps remove the bottleneck.

The other side of the coin is if the bus speed is faster than devices that plug into them, then we can reduce board complexity and/or improve connectivity. More USB ports, more M.2 slots, etc, without needing to run more traces in the PCB.

Quote: Originally Posted by 8051 View Post
But that's only for sustained reads right? It doesn't help random reads/writes does it?
PCI-e 4.0, 5.0, and 6.0 increase speed via GT/S (clock speed), not by making the bus more parallel or multiplexing. The result will end up in lower latency, provided the controller and cache can keep up. So yes, it will, eventually, help randoms.

Unfortunately, IOPS data isn't available yet on the 4.0 drives, so... We'll see. But for comparison, Samsung drives use straight up DDR2/3L as their NAND DRAM cache, and those can far out-strip PCI-e 4.0.

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post #29 of 33 (permalink) Old 06-21-2019, 07:00 AM
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Quote: Originally Posted by bigjdubb View Post
Backwards compatibility does get taken too far some times. Do we really need to keep putting PS\2 ports on consumer motherboards? Sometimes you just have to shove those who don't want to move forward.
you leave my ps/2 connectors alone! those are for installing WIn7 you nave

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post #30 of 33 (permalink) Old 06-21-2019, 07:33 AM
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Quote: Originally Posted by tatmMRKIV View Post
you leave my ps/2 connectors alone! those are for installing WIn7 you nave
You need PS/2 to install windows 7? I cut the connectors off of ps/2 keyboards when I find them, I've never had a problem installing windows 7.

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