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    PCIE Bifurcation

    2* https://www.aliexpress.com/item/1005003595062598.html 1* https://c-payne.com/products/pcie-bifurcation-card-x8x8-single-width -> 8* NVME with total bandwidth of gen3 x16
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    PCIE Bifurcation

    Its the cpu, not the motherboard. If you want a budget NVME system consider using and old xeon v2 system. I can suggest one of the Chinese x79 boards. You can fit 2*hyperX cards. I think the Antermiter x79 turbo could work for you. Another option is to use an x8x8 bifurcation Card and then two...
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    PCIE Bifurcation

    Only the asrock x99 and asrock x299, as well as their asrockrack counterparts. Intel mainstream CPUs don't support x4x4x4x4 at all.
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    PCIE Bifurcation

    Yes your understanding is correct. The latest intel mainstream even only supports x8x8. The Gigabyte aurus x570 does support x4x4x4x4 though. Also check the asrock rack x570 as it also boasts 2* oculink 4i for even more storage. the craziest option would be the asrockrack deep itx...
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    PCIE Bifurcation

    https://c-payne.com/products/pcie-bifurcation-card-x8x8-low-profile-adapter-ncase-m1-and-others this bifurcation card plugged into the mainboard slot. The (Low profile!) LSI card into the bifurcation card top slot. you also need a short (10cm) cable. (i.e. LinkUp right angle, ADT-Link R33SR or...
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    PCIE Bifurcation

    malexejev 1. option one has no clock distribution. Drives AND Mainboard/CPU must support SRIS. (seperate reference independet spread) clocking architecture. 2. This one has most likely a gen3 clock buffer on board. Both cards may or may not work in gen4 mode. That depends on too many things...
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    PCIE Bifurcation

    This is of course provided your bios exposes the options.
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    PCIE Bifurcation

    When using gen3/2 devices you are good. Ryzen has 24 lanes. (4 chipset, 4 M.2, 16 for slot1/2) When you use only slot 1 you can use x16, x8x8, x8x4x4 or x4x4x4x4 in slot 1. When you use slot 1 and 2 you can use x8 or x4x4 in both of them.
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    PCIE Bifurcation

    Note that on Ryzen two x16 slots.means that they are already split into x8. can't do x8x8 then of course, only x4x4. Bifurcation cards and risers in combo are good for gen3. gen4 poses significant challenges regarding signal integrity. Careful consideration neccesary when planning a gen4 build.
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    PCIE Bifurcation

    Impressive work with the cable. I would have lost all patience soldering it. Looks pretty decent quality too, one can see some experience there.
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    PCIE Bifurcation

    Nice work. Without special tooling, wow. Which cable are you using? PTH is of course bad for anything aiming at gen4.
  12. C

    PCIE Bifurcation

    this becomes especially problematic with gen4 Even that is too much attenuation for PCIe gen4. (your 3080) Try forcing link speed to gen3 in BIOS.
  13. C

    PCIE Bifurcation

    5mil spacing
  14. C

    PCIE Bifurcation

    OK, fair enough. Good luck ;)
  15. C

    PCIE Bifurcation

    Neither ribbon cable or 2-layer sound great. Mind the differential Impedance!
  16. C

    PCIE Bifurcation

    Jup, best go full OCD about those, but by taking a peek at your traces you seem to know your trade.
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    PCIE Bifurcation

    Ac-coupling I would say optional, but proper termination is necessary.
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    PCIE Bifurcation

    I see. Need to add some termination resistors though with that kind of outputs, or am I missing something?
  19. C

    PCIE Bifurcation

    Looks nice. Which clock buffer chip are you using? Dosnt look like the ones I am using.
  20. C

    PCIE Bifurcation

    Please drop me an email: [email protected]
  21. C

    PCIE Bifurcation

    The Coolest my suggestion would be a slimline based solution: host adapter: https://c-payne.com/products/pcie-slimsas-host-adapter-x16-to-2-8i -or- https://c-payne.com/products/pcie-slimsas-host-adapter-x16-to-2-8i-90deg cable: https://www.arrow.com/en/products/8es8-1df21-0.50/3m device...
  22. C

    PCIE Bifurcation

    with a Packet switch (PLX) you can use any uplink, even x1. The mining limiter wont interfere as long as the Downstream GPU Link is x8. I have some PLX boards in manufacturing currently.
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    PCIE Bifurcation

    Hi Guys! sorry for being unresponsive here. That always happens to me because the forum just sends one eMail for the first new post and I tend to miss it. I have moved my store to a new location: c-payne.com The Coolest: PCIe Bifurcation Card - x8x4xM.2 - low Profile Adapter - Ncase M1 and...
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    PCIE Bifurcation

    Also it would be simpler to use my x8x4x4 and a single x16 cable I assume. less interconnects, less singal issues.
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    PCIE Bifurcation

    you may be lucky with a very high quality and short cable, like the loque cobalt, when you plug it directly into the riser and the GPU on an ITX mobo.
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    PCIE Bifurcation

    I will have them back in stock in 3 weeks or so. gen4 should be good, if you are not planning to add a cable.
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    PCIE Bifurcation

    Yes, the left turn one will interfere with the mobo.
  28. C

    PCIE Bifurcation

    Uhm, I just checked their page again. It's "R83SR" I can't find the "RS83R". I think they are the same thing though, maybe a misspelling. Make sure to use the "R" one and not the "L" one as that one won't fit.
  29. C

    PCIE Bifurcation

    I do have an x4x4 card. https://peine-braun.net/shop/index.php?route=product/category&path=65_67 An x4x4x4x4 in the first slot would still be preferable I guess. Your BIOS/CPU must be capable of supporting this though. Need to verify that first!
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    PCIE Bifurcation

    1)yes 2)no, one will work at x8 and the other one will get x0
  31. C

    PCIE Bifurcation

    sorry for the delay in response. yep that's the general idea. The GPU will need some support. Ideally you would mount the riser cable with some custom made pieces to the chassis. No electrical modifications neccessary on the PCB, but of course you would have to think of a way to properly mount...
  32. C

    PCIE Bifurcation

    Both options are doable, drop me an email if you want.
  33. C

    PCIE Bifurcation

    Individual ports will negotiate individual link bandwidth. a mix of gen2/3 is very well possible. Some weird BIOS may screw this up but I haven't seen any.
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    PCIE Bifurcation

    Try flashing an empty BIOS to the card (after backup ofc!) you can then load the bios through your virtualization software. (or try removing the UEFI GOP) Alternatively, play around with the UEFI shell. I know it's possible to add a driver to be loaded. Maybe you can blacklist or remove it there.
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    PCIE Bifurcation

    That will be a tough design work, imagine all the traces crossing each other.. may even need 6 layers for that. I am sure you can solve it in software! Please disable CSM in BIOS! Legacy VGA is limited to 1 card. UEFI GOP can handle multiple outputs. You may be able to configure the active...
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    PCIE Bifurcation

    @maeslin I can make one for you. Just drop me an email
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    3000 series NVLINK bridge reverse engineering

    Not sure if anyone has done this yet... I cracked open the new 3000 series NVLINK bridge to see whats inside and if we could make custom sized or cabled ones. (i.e. for single slot watercooling) First remove both of the plastic top covers. Apply brute force. Secondly heat up the complete piece...
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    PCIE Bifurcation

    Yes that is a misinterpretion of the specs. Slot 1 are 16 CPU lanes that could if bios support would be there support x4x4x4x4 The other two x16 slots are chipset lanes each running at x4 Add the nvme you are at 7 x4 devices.
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    PCIE Bifurcation

    Sure, you cover the shipment cost though.
  40. C

    PCIE Bifurcation

    Badrig Try this one: https://peine-braun.net/shop/index.php?route=product/product&path=65_59&product_id=68 The cards will sit a bit lower, but by taking a brief look at your case that shouldn't be an issue.
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