Advices for fitting 2-slots PCIE5 card

I bought this card, thinking it is perfect for a flexible 2 GPU build: Asrock-X870-Taichi-Creator - PCIe Lane Map | MoboMaps .

My goal was to use the top x8 slot for a large GPU and the bottom x8 slot for a 2-slot GPU.

Unfortunately, when I tried inserting the bottom card, I noticed it slightly overlaps with the bottom connectors (audio, USB, …).

I unplugged those cables and finally managed to insert the card, but it was with difficulty, and I am worried it would decrease the lifetime of this (expensive) card.

I am very surprised because this motherboard is clearly targeting 2 GPU builds, as you can see in the picture below.

I am considering buying a 180° PCIE5 riser like this one: Riser Gen 5.0 PCIe (x16) straight, 64GB/s bandwidth ; that would shift the card a few centimeters up, creating a space beneath.

What do you think?

Have you encountered this problem?

How do you plan to screw the card into the case with that? And will your displayport/hdmi ports still be available and not fouled by the slot?

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These are good questions @thro, thanks.

  • I might be able to find some longer screws; also I might not screw the card and instead block it using a special device from the case (RM44 case from silverstone)
  • I don’t need the cards ports since this is for AI inference but the card is bower style and I know see it will reduce airflow if the card is shifted :frowning:

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Can you get away with 90 degree connectors on what ever motherboard headers are being blocked?

Thanks @undersuit, I will investigate this idea. I only use 1 block of headers from the bottom row, if I could make the connector for these headers smaller it would fix my issue in a very satisfying way.

For the curious, here is the layout of the headers, I am only using “panel1” (power button), located at the extreme right:

I’ve always found that fan, USB 2.0, and front panel audio connectors fit fine underneath GPUs, there’s enough of a gap between the cooler and the motherboard and the cables are thin enough that they’ll sit flat at a 90º angle and thus clear the GPU cooler. What’s the card catching on?

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The headers are just a few millimeters too close to the PCIE slot. I believe the issue would happen with any card taking the full slot width. Maybe a bad design from the manufacturer for this particular model?

Actually, even using 90° connectors would not be enough, because the height of the connectors themselves would already take all the available space.

Here are the 2 solutions I am considering at the moment:

  • cut the header pins to half their height;
  • or use wire wrapping (probably the best choice, see image below)