New PCIe 4.0 Performance Improvements Means Graphics Cards Could Double Data Transfer

Written by Shaheryar Ehsan-i-Haque on Wed, Aug 30, 2017 1:00 PM

Peripheral Component Interconnect Special Interest Group (PCI-SIG) has announced that the PCIe connection slot, used by most graphics cards of today, is due an enhancement release later this year, to be called PCIe 4.0. The PCIe 4.0 connection slot will reportedly bring double the performance capability of today's current PCIe 3.0, which is the name of the connection slot being used by us gamers at the moment.

The interconnect bandwidth will double from 8 gigatransfers per second in PCIe 3.0 to 16 GT/s PCIe 4.0. The new standard could be revolutionary in terms of data transfer between different parts of a computer and more.

PCI Express is a high-speed bus or connector which provides data transfer between components of a computer such as an external GPU of a laptop or storage devices such as SSDs or memory cards. The standard being used nowadays is PCIe 3.0 which gives a 32GB/s data transfer rate, whereas the upcoming standard will provide 64GB/s speed. Doubling the transfer speed in just three years.

So this boils down to the new PCIe 4.0 improvements could mean graphics cards have up to double the data transfer limit, thus removing a possible bottleneck and freeing up their potential gaming performance.

To continue this trend it is said that PCIe 5.0 will be arriving in 2019 and promises an even more astonishing bandwidth of 128GB/s. The leap could prove beneficial especially for multi-GPU setups such as SLI and Crossfire. We may not need a separate connector for multi-GPU setups in the future, but likewise this also means that a single card solution will be capable of more data transfer. Furthermore, it will have theĀ support of 400Gb ethernet connections for fast uploads and downloads. AAA games will only need a second or two tops in order to be downloaded.

Are you excited about the new standard? What possible benefits do you think PCIe 4.0 and 5.0 will bring? Let us know!

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16:55 Sep-01-2017

Very nice indeed, but no use in gaming in the near future. None but the fastest of graphics cards on the highest of resolutions suffer any significant impact on even PCIe 2.0. Just google it, differences of 3.0 vs 2.0 are very small on like 4k and almost non-existent on regular resolutions. For high end (local) networks and state of the art storage contollers the potential is a lot higher.

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04:29 Sep-01-2017

I still find this PCI-e upgrade more spectacular than the move from Skylake to Kabylake. It's always good to have headroom and with so many more hardware using PCI-e specification it is good to have a lot more spare to offer.

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02:19 Sep-01-2017

400 GIGABITS?!?!? I ONLY HAVE 60 MEGABITS....AND EVEN GOOGLE FIBER IS ONLY 1 GIGABIT!!

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09:21 Sep-01-2017

too much "dumbass" jokes on GD recently...

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11:15 Sep-01-2017

DisplayPort 1.4 is almost 26 Gigabits per second already,
not sure which fiber you talk about, but 2011 fiber tech can go up to 101 Terabits per second (273 gigabits per channel)...

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18:45 Sep-01-2017

He's probably referring to a residential internet connection speed.

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21:54 Sep-03-2017

Yes the end of the article was talking about ethernet speeds so I am talking about ISP speeds.

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15:27 Aug-31-2017

guys you can compare 1.0 vs 2.0 vs 3.0


the pci 1.0 is still very good for single cards


http://www.guru3d.com/articles-pages/pci-express-scaling-game-performance-analysis-review,1.html

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18:21 Aug-31-2017

The only problem with the PCIE 1.0 slot are some compatibility issues. I've heard that despite all PCIE cards being backwards compatible, there are some issues when trying to insert new cards into PCIE 1.0 slots.
Also if memory serves, PCIE 1.0 will only provide 50W of power through the slot. I think PCIE 3.0 provides 75W of power. So be aware if you are buying a card that runs of the PCIE slot.

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18:23 Aug-31-2017

I'll put some links bellow so you can read and check it out yourself. Btw I don't remember where I reed the 50W & 75W from the PCIE bus. That bit you will have to check for yourself (too tired).


http://www.tomshardware.co.uk/answers/id-2187776/pcie-graphic-card-fit-pcie-slot-motherboard.html


http://www.tomshardware.co.uk/answers/id-1827823/pci-cards-work-pci-slot.html

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18:24 Aug-31-2017

yeah thanks buddy

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18:26 Aug-31-2017

pci 3 is enough for few years

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19:37 Aug-31-2017

Honestly we can't know that. It should be, but we don't know how fast the next generation of GPUs will be or how their communication with the CPU will be handled. Volta and Navi could actually need the extra bandwidth, but until they are actually launched we cannot know. ;)

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14:53 Sep-02-2017

True, but if you're gonna buy a new or used gpu, the main thing is that the mobo in question can make use of that gpu. I'm pretty certain, that PCIE 4.0 & 5.0 will be backwards compatible with PCIE 3.0 and maybe even 2.0.

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19:43 Sep-02-2017

@Gankutsou, I agree. I am fairly certain that they will at least be backwards compatible with PCIe 3.0 hardware, and maybe even 2.0. I doubt anyone will have to worry about their current GPU not working if they were just upgrading for whatever newest CPU will be available on those new boards.

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20:17 Sep-02-2017

@LeadStarDude
I don't think I got the @. I'm Gankutsuou, you've missed 1 "u". Also, I don't know if putting an "," behind the username disrupts the @ process.

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20:38 Sep-02-2017

I am an old man so forgive me not using the proper order or use of symbols online. I am not a regular Facebook or Twitter user. Most of my online interactions are in comment sections like this one. I don't even play online multi-player games. Also I apologize for missing a letter in your name. No one is perfect. ;)

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05:56 Sep-03-2017

Then you have found a kindred spirit today. I'm not present on Facebook or Twitter, and I mostly play single player games, so there is no need to apologize.
Happy to make your acquaintance. :)

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10:33 Aug-31-2017

Don't know how everybody here fells about the PCIE 4.0, but I'm more than happy with 3.0.
Unless I have to upgrade, and I can't buy a mobo with PCIE 3.0, I'll buy the one with 4.0, or 5.0 (I don't upgrade often ;)

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07:37 Aug-31-2017

I wanted to up my PC in the next month or so, but now i'll wait.
New GPU, new Motherboard etc...
BTW I wouldn't care if my game took 5 minutes to download anyway. Considering the size of AAA games nowadays

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10:17 Aug-31-2017

PCIe 3.0 had double the data transfer of PCIe 2.0 and it didn't matter that much in gaming, but if you are bored of waiting for games to download you will be waiting for them to download faster for 2 years.

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10:32 Aug-31-2017

no need for PCI-E 4.0 when even 2.0 is NOT fully utilized yet.
Also if you are doing just gaming and some light work, you do NOT need a new CPU, just a new GPU, your CPU is essentially an i7 7700k clocked 200Mhz lower and right now for just gaming and light work it's much more than enough.


Your GPU is great as well, I'd recommend you to wait till next gen as currently no GPU is really worth it for you.

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10:43 Aug-31-2017

yo psycho how has your PC been serving you ? I am planning to upgrade my cpu to either ryzen 1600 or i7 8700.

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17:19 Aug-31-2017

for gaming, my CPU never goes above 30% usage in the most CPU intensive games :D
I run/host multiple servers, databases, chrome with tens of tabs, skype, steam, uplay, battle.net, origin, team speak server + team speak, discord, never close my IDEs and game at the same time and my CPU never goes above 70% usage or even close. All this and my CPU never goes above 40-42C :D


I doubt the i7 8700k will be as cheap as the r5 1600, I think that it will cost 330$+, though it might be 10-15% better, it should be, it's next gen after all, if NOT it would be quite disappointing. Plus if it is NOT soldered you will need at least a 50-60$ cooler to keep it cool, considering Intel is still using their slightly improved 14nm process node.

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23:11 Sep-01-2017

I didn't say that I would get the K version I said i7 8700 I wouldn't bother overclocking an i7 since the temperatures on last few gens are kinda high. I am pretty sure that my Cooler master TX3 evo can cool i7 8700(non K).

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15:12 Sep-02-2017

And here I am...sitting around with my peasantly Haswell-E.. xD

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02:53 Aug-31-2017

I think that they are getting ready for Volta and Navi. I have a feeling that both will change everything, and force the need for PCIe4.0 bandwidth.

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06:44 Aug-31-2017

I just hope it's backward compatible just like 3.0

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07:31 Aug-31-2017

They probably will be, but PCIe3.0 will bottleneck the new cards if they are truly fast enough to need the higher bandwidth. I hope that they really are that fast. Going from 2.0x16 to 3.0x16 hasn't shown much difference so far. Only certain games actually gain performance by having the newer standard, but it is possible that we will see some changes in actual game development standards that could cause the need for a higher bandwidth connection. Who knows...

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01:44 Aug-31-2017

from the looks of that pci e advancement chart it looks like it is advancing and a near exponential rate in development. any thoughts on why?

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10:23 Sep-01-2017

that jump from pci e 4 to 5 looks awfully steep... somebody stroked out while makin that graph

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17:34 Aug-30-2017

by the looks of it, we may bypass 4.0 consumer side and go straight to 5.0 out of necessity (on AMD side) as they continue to use multiple consumer dies to form enterprise chips

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17:11 Aug-30-2017

gpus still have yet to utilize the 3.0 in full and they are already upgrading lol

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17:20 Aug-30-2017

It's called looking ahead. If you know they gonna exceed the capability at one point, you can work and come up with a better one before it happens and so there will be no bottleneck.

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22:20 Aug-30-2017

yes, but let's fully utilize 2.0 first, alright? :D

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17:07 Aug-30-2017

does this also benefits the power draw of current PCIE lanes?

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22:20 Aug-30-2017

a few months ago it was stated that it would be still 75W.

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20:16 Aug-31-2017

It would've been nice to have some high power lines there to add support for 150w cards

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15:27 Aug-30-2017

But it would still be limited to the card's capabilities.

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15:11 Aug-30-2017

I wonder It if this will help Vega performance???

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20:06 Aug-30-2017

Doubt it.
The gpu (unless used for mining) isn't saturating the bandwidth of PCIE 3.0. If I'm misinformed enlighten me.

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14:36 Aug-30-2017

Its strange that pcie 3.0 lasted 7 years, while pcie 4.0 is going to be just for 2 till 2019.. hmm

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14:46 Aug-30-2017

do i smell bs about pcie 5.0 or something big is coming which will require such high bandwidth?

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14:14 Aug-30-2017

What's the point of this when there's literally no difference performance wise between pcie 2.0 x16 and 3.0 x16

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14:30 Aug-30-2017

this offers a potential for future,
maybe some extreme speed SSDs or maybe even some modular ramboards or whatever...

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14:50 Aug-30-2017

Well I guess it is futureproof, but considering even a Titan X can't saturate pcie 2.0 x16 I think its a bit too early. Although as long as it doesn't make the prices crazy, why not.

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23:58 Aug-30-2017

with a 980ti, it would lose about 7% performance between pcie 3.0x16 and pcie 2.0 x16 (pci3.0 x8). but there are other stuff that uses pcie slots.

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23:34 Aug-30-2017
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13:43 Aug-30-2017

I'm interested to see external PCIexpress solution

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16:09 Aug-30-2017

How cool would it be to have a usb c type port that can not only function as a high bandwidth port like thunderbolt, but also as direct PCIe lanes? Meaning that you could hook up an external gpu without any loss in performance (apart from the cpu bottlenecks)

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20:07 Aug-30-2017

Would love to see that. :)

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13:38 Aug-30-2017

Any Suggested mobo for this ? Is it already in market ?

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13:43 Aug-30-2017

Not yet, probably in next gen Intel/AMD chipset revisions. :)

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13:25 Aug-30-2017

this basicly means that my brand new expensive mobo will be pure cr*p in one year or so...

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14:41 Aug-30-2017

Actually that wont happen until PCIe 3.0 becomes the bottleneck, because these things are backwards compatible.

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14:43 Aug-30-2017

nope, as even PCI-E 2.0 is good enough to run the best GPUs that are out now 99% as good as PCI-E 3.0...

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