Intel Comet Lake-S CPUs and Z490 boards support PCI-E 4.0 (but it's not active)

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Jan 22, 2020.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

    Messages:
    36,995
    Likes Received:
    6,074
    GPU:
    AMD | NVIDIA
  2. fantaskarsef

    fantaskarsef Ancient Guru

    Messages:
    11,255
    Likes Received:
    3,312
    GPU:
    2080Ti @h2o
    kekw.
     
    GeniusPr0 and sverek like this.
  3. sverek

    sverek Ancient Guru

    Messages:
    5,584
    Likes Received:
    2,440
    GPU:
    NOVIDIA -0.5GB
    Better safe than sorry. Would be sad if inactive PCI-E 4.0 added additional cost for the chipset.
     
    fantaskarsef likes this.
  4. Undying

    Undying Ancient Guru

    Messages:
    12,485
    Likes Received:
    1,931
    GPU:
    Aorus RX580 XTR 8GB
    Great platform that will be. Chipset that support pcie 4.0 but cannot use and an 300w tdp 10core already outdated. Intel these days...
     
    tunejunky likes this.

  5. anticupidon

    anticupidon Ancient Guru

    Messages:
    4,589
    Likes Received:
    1,151
    GPU:
    Polaris/Vega/Navi
    When I was little I always ran against older kids from other blocks, and I won many times.
    They got to the point :
    Yeah, tomorrow, I'll bring my special running shoes and I will win, because you are a cheater.
    Talking about special chipset that will make everything ok and forgotten.
    Intel, what are smoking, buddy?
     
    tunejunky likes this.
  6. Astyanax

    Astyanax Ancient Guru

    Messages:
    4,734
    Likes Received:
    1,403
    GPU:
    GTX 1080ti
    well the signal wasn't completely clean in Zen 2 so i don't see the excuse flying here.

    though not surprised intel can't get a first generation gen 4 controller right, they couldn't with gen 3.
     
    386SX and tunejunky like this.
  7. rl66

    rl66 Ancient Guru

    Messages:
    2,285
    Likes Received:
    163
    GPU:
    quadro K6000+Tesla M2090
    Nope the problem with Zen2 cpu is chipset dependent, it's for this reason that it is possible on some 3** and 4** chipset but deactivated (also it's an argument to sell more X570 too).

    I hope for Intel that they will fix it with another chipset and a new socket (1201? good idea isn't it? maybe i am trolling a bit...) .
     
  8. squalles

    squalles Master Guru

    Messages:
    754
    Likes Received:
    32
    GPU:
    Galax GTX 1080 EXOC OC
    Ok, maybe in 2028 we can see any improvement using pci expresd 4.0 over 3.0 on new top high end videocard
     
  9. asturur

    asturur Master Guru

    Messages:
    507
    Likes Received:
    127
    GPU:
    Geforce Gtx 1080TI
    Is not about videocards, but about lines availability.
    If pciEx4 is double fast than 3, i can use 8 line instead of 16 on a pci express 4.0 video card, get the performance of 3.0 at 16x. Use the free 8 lines for something else ( another nvme for example, a fast one )
     
    carnivore and tunejunky like this.
  10. Kaarme

    Kaarme Ancient Guru

    Messages:
    1,781
    Likes Received:
    521
    GPU:
    Sapphire 390
    Haha, this is ridiculous. Though in a sense understandable because apparently ASMedia failed at making a chipset for Zen2, and thus we still haven't got anything but the partially flawed X570 (a variation of the CPU io chip itself). Seems like Intel's billion dollars R&D had no better luck.
     
    tunejunky likes this.

  11. Astyanax

    Astyanax Ancient Guru

    Messages:
    4,734
    Likes Received:
    1,403
    GPU:
    GTX 1080ti
    im sorry but you don't have any idea what im talking about.

    it has nothing to do with chipsets, the gen 4 controller in zen 2 experiences unusual noise related errors and rather than admit a problem and tell people they may have to drop back to gen 3 properly, they dialed back the smu logging and covered it up.
     
  12. tunejunky

    tunejunky Master Guru

    Messages:
    934
    Likes Received:
    332
    GPU:
    RadeonVII RTX 2070
    for games, sure.
    but if you're a content creator the future is now. remember time = money, now leverage threadripper 3/ ryzen 2 with (most likely an Instinct) a pcie 4.o gpu and you're saving days of work in a week.
     
  13. tunejunky

    tunejunky Master Guru

    Messages:
    934
    Likes Received:
    332
    GPU:
    RadeonVII RTX 2070
    exactly. and if that nvme is also pcie 4.0, along with the gpu you can do tons of work in little time
     
  14. wavetrex

    wavetrex Master Guru

    Messages:
    768
    Likes Received:
    439
    GPU:
    Zotac GTX1080 AMP!
    Just wait until nVidia announces their new generation Ampere, or 3000 series or whatever the name is and it will be PCIe 4.0 cards.
    And AMD's RDNA(2) products will obviously be 4.0 as well.

    No-one in their right minds would buy Z490 to willingly give up performance on their shiny new latest generation GPUs... especially considering that AMD's next gen with even more IPC and probably more clocks as well is basically just 6-7 months away from release.

    How could they (Intel) screw this up so badly !?
     
  15. schmidtbag

    schmidtbag Ancient Guru

    Messages:
    4,699
    Likes Received:
    1,504
    GPU:
    HIS R9 290
    It only works that way if the device itself is PCIe 4.0 compatible. A 3.0 card in a 4.0 slot is still only going to operate at 3.0 speeds.
     

  16. EspHack

    EspHack Ancient Guru

    Messages:
    2,470
    Likes Received:
    42
    GPU:
    ATI/HD5770/1GB
    maybe at gen 5.0 we will finally have enough lanes that we can spare some for 10g ethernet, and phones will be doing 50gbit lifi by then
     
  17. waltc3

    waltc3 Maha Guru

    Messages:
    1,031
    Likes Received:
    310
    GPU:
    AMD 50th Ann 5700XT
    Q: "Do you support PCIe4.x yet?"

    Intel: "Yes, we have motherboards right now that support PCIe4.x, but due to technical reasons they only function as PCIe.3x mboards at present."

    Q: "So if you put a PCIe4.x device in such a slot, it will function only as a PCIe3.x device"?

    Intel: "Yes, that's our PCIe4.x support at present, you are correct."


    Reminds me of nVidia in the past: "Oh, yes, we support that feature in this product/drivers and always have--it's just that we haven't turned it on, yet"....;)

    EDIT: Slightly different take here:

    https://www.tomshardware.com/news/i...lans-then-nixes-pcie-40-support-on-comet-lake
     
    tunejunky likes this.
  18. TLD LARS

    TLD LARS Member Guru

    Messages:
    130
    Likes Received:
    35
    GPU:
    Asus Vega 64 VRMfix
    This is a huge middle finger to the board partners.

    Intel tells them to design for PCIe 4, so they use money and time to design the motherboard to meet this standart, Instead of just copy paste from previous gen, but when the Chipset trays arrive and it is time to solder it onto the board, it does not work.

    That is how i understand it atleast.
    Hope somebody gets fired for this huge fail.
     
  19. svan71

    svan71 Active Member

    Messages:
    51
    Likes Received:
    21
    GPU:
    GTX 1080
    wow more incompetence from Intel, I'm shocked. The company needs a new CEO to bad Lisa Su has a job.
     
  20. svan71

    svan71 Active Member

    Messages:
    51
    Likes Received:
    21
    GPU:
    GTX 1080
    If only people who buy Dell,HP,Lenovo etc etc understood any of that we might get somewhere in boosting AMDs rep to the masses.
     

Share This Page