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PCIe 4.0 feature pops up in X470 Motherboard BIOS

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, May 20, 2019.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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    The motherboard manufacturers are hard at work prepping X570 series motherboards for the new Ryzen 3000 processors. These will also bring PCI-Express 4.0 towards the eco-system. Interesting, Gigabyte ...

    PCIe 4.0 feature pops up in X470 Motherboard BIOS
     
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  2. Astyanax

    Astyanax Ancient Guru

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    Some of the existing boards are built well enough to handle Gen 4 from the CPU controller.

    https://www.tomshardware.com/news/amd-ryzen-pcie-4.0-motherboard,38401.html
     
    Last edited: May 20, 2019
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  3. fantaskarsef

    fantaskarsef Ancient Guru

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    That's actually pretty cool, even if the bandwidth doesn't find much practical use as of now, or am I wrong?
     
  4. Undying

    Undying Ancient Guru

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    Not right now but it could be the near future. We just need more powerful gpus.
     
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  5. asturur

    asturur Master Guru

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    or faster disks :)
     
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  6. Astyanax

    Astyanax Ancient Guru

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  7. Clawedge

    Clawedge Ancient Guru

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    I know it's not adding much to the discussion, but there is no way in hell a particular competitor would allow this. They would demand a new socket and a new chipset and a new CPU.

    Thanks AMD for being cool.
     
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  8. Clawedge

    Clawedge Ancient Guru

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  9. Astyanax

    Astyanax Ancient Guru

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  10. fantaskarsef

    fantaskarsef Ancient Guru

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    You are both right only that... I don't see it making sense right now, on a now "legacy" mainboard. Besides professional use I honestly doubt there's a need to surpass PCIe3.0 at this time.
    BUT the future always has to start somewhere, and it doesn't cost more for consumers, so as long as those new BIOS will still be stable with PCIe 4.0 enabled, it's only a good thing imho.



    Thanks for sharing the articles / benches
     

  11. nizzen

    nizzen Master Guru

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    The ssd barly go over pci-e x4 3.0 speeds on seq read/write :p

    Pci-e 4.0 maybe offer even lower latency, like 3.0 did over 2.0.

    Intel Optane pci-e 4.0 incoming? :D
     
  12. fantaskarsef

    fantaskarsef Ancient Guru

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    At least until they discover that the optane algorythm is actually less safe than anything else Intel "invented" in the last decade. :D
     
  13. Athlonite

    Athlonite Maha Guru

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    erm What's the 3DMark01 Enhancement
     
  14. Netherwind

    Netherwind Ancient Guru

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    Is there a BIOS update that will transform my 6700K to a 9700K? ;)
     
  15. spine

    spine Member Guru

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    It's a tweak which solely makes that one benchmark run faster. My Asus Z87 Hero has it, as do many others.
     

  16. Reddoguk

    Reddoguk Ancient Guru

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    Well those transfer speeds of Gen4 is probably the reason for active fan/chipset cooling on the 570 mobos. If you could push both PCIe slots to X16 i think 300/400 chipsets would melt. ^^

    But there's not powerful enough GFX cards out yet that could push those gen4 numbers.
     
  17. Fox2232

    Fox2232 Ancient Guru

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    Issue is not in slots. And no, what you claim is false as it can get.
    As CPU is PCIe 4.0 able, anything directly connected to it able to do same can work. (Like Sandy to Ivy on adequate MBs.) Since PCIe/M.2 slots behind chipset are already speed limited to 2.0 and mutually exclusive in use, there is no reason to increase bandwidth towards and from older chipset. (Which likely does not even tick fast enough to modulate signal.)

    Then to the GPUs. Look at single GPU system using PCIe 3.0 x16. Now upgrade to two PCIe 4.0 based and you have PCIe 4.0 x8 for each.
    Or you can actually afford to use 2nd PCIe slot which is physically x8 for something else. (Like two M.2 drives.)

    With PCIe 4.0 those slots are actually becoming more useful. With PCIe 5.0 we'll already be at point where one can comfortably use external x4 GPU as cabling will be OK.
     
  18. schmidtbag

    schmidtbag Ancient Guru

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    Makes sense - aren't the bulk of those lanes provided by the CPU package anyway?

    Depends who you ask. As far as I'm concerned, no GPU comes anywhere close to saturating 16 PCIe 3.0 lanes, except maybe in certain synthetic loads. Personally, I find it hard to justify M.2 SSDs since most everyday home use-cases don't benefit from the extra NVMe bandwidth (yes, I know, there are real-world cases that do take advantage of it, but my point is most home users don't).
    To me, the real benefit of PCIe 4.0 are the benefits to x1 and x8 devices. Although this won't happen (due to backward compatibility), x8 lanes could become the new maximum standard on motherboards; there's no real point in having any more than that anymore, except for a handful of industrial cases or forward compatibility with older parts. As for x1 slots, this opens doors to new devices that used to demand more lanes, such as NICs exceeding well beyond 1Gbps, capture cards, extra USB 3.2 ports, or even low-end GPUs that aren't complete garbage.
     
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  19. Agonist

    Agonist Ancient Guru

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    Who the hell cares of if normal everyday users get no benefit from NVME. I do, and so do many of on guru3d.

    MGPU will kick ass with PCIE 4.0. Especially with AMD since everything is done over PCIE4. The reason I made sure I got a X370 board was so I could at least SLI or Crossfire at 3.0 8x speeds with an NVME and a m.2 sata drive if I wanted. B350 boards and B450 boards only do 4x 3.0 on the second slot.
     
  20. schmidtbag

    schmidtbag Ancient Guru

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    Um... most people care? Hence my point...
    You aren't most people, and therefore you don't apply to what I said. I already addressed this, so... what exactly are you in a huff about?
    Indeed it will. And good for you - it seems you actually spent your money wisely.
     

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