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Recent content by Awilen

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    PCIE Bifurcation

    There were quite a number of posts in this very thread clearly stating that bifurcation support must be present on both the chipset and in the BIOS to work, so I have a hard time believing ASUS made a bifurcation board that "just works" without something akin to a PLX chip, and working on boards...
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    PCIE Bifurcation

    Not sure about 8x/4x/4x, but the Asus Hyper M.2 x16 has 4 PCIe NVMe SSDs connected through bifurcation in a 4x/4x/4x/4x configuration.
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    PCIE Bifurcation

    This is on hold. I designed a (non-routed) PCB layout, but I reckon it will fall flat on its face if it uses flexible printed circuit to link the slot to the additional PCB, mostly due to electromagnetic noise. PCIe 3.0 8x bandwidth just won't be possible. I originally considered ethernet...
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    PCIE Bifurcation

    Reporting back! A while ago I asked Asus if their X370-i and AB350-i supported PCIe bifurcation and if it could in the future, and here's the answer: I'll keep to AsRock then.
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    PCIE Bifurcation

    You won't see an improvement in performance. The PCH is responsible for pretty much everything connectivity-related (USB, SATA, Networking, additional PCIe lanes...) and is connected to the CPU through the DMI (Direct Media Interface) 3.0, which operates at roughly PCIe 4x speed. That will be...
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    PCIE Bifurcation

    Look through pages between 8 and now (IIRC), there's a dual-R9 Nano system in a Dan A4. He used three ribbon cables with an off-the-shelf bifurcation riser from supermicro. You may need shorter ribbons to adapt it though.
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    PCIE Bifurcation

    Looks like bifurcation is getting traction, somehow. Interesting.
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    PCIE Bifurcation

    Went through the Asus ROG Z370i and X370i manuals, no mention of PCIe bifurcation support. Sent a tweet at @ASUSROG to ask for bifurcation support, wait'n'see.
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    PCIE Bifurcation

    I'm interested in the schematics around the zero delay buffer too. Would you mind sending a PM my way?
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    PCIE Bifurcation

    Unfortunately, finding mobos that support bifurcation with publicly available knowledge is not an easy task, since even when shuffling through several user manuals, there aren't many that specifically include PCIe bifurcation configuration / riser card support in the BIOS/UEFI description...
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    PCIE Bifurcation

    I was reconsidering using flex pcb on the common signals. The problem at hand would be that each pad of contact being connected to the fpcb, the connection quality would suffer. What if a cut was made between each pad, allowing each pin to press its pad against the pad on the card?
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    PCIE Bifurcation

    I'm still looking into using the holes on top of the PCIe slot for the common signals. They are about 7.85mm deep, and connections can be secured thanks to the card in the slot pushing the pins away, and with adhesive tape on the side of the slot. I'm looking for 1mm pitch ribbon cable to...
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    PCIE Bifurcation

    Thank you much! I'll look more into it. I already went to it for the package dimensions and pinout to recreate it in Eagle. Baby steps, but I'm getting... somewhere. Not at all, but now that I know it's necessary, I'll learn about it! I'll write down a set of functional specifications soon. I...
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    PCIE Bifurcation

    Thank you! C_Payne, if you happen to pass by, may I ask which IDT-9DBL02 chip you used, what are the components around it and their roles, and is the spacing of the components important or can they be placed closer together?
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    PCIE Bifurcation

    That's news to me. I found conflicting reports, so I'll take your experience over hearsay. Back on topic. From my calculation, I'd need 8 4-pairs ethernet cables to get all the pins just from the back of the slot. I'm looking to avoid having that many. Simple question: can the ground pins of...
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