ASrock Z370 Taichi PCIe Slots

Jun 1, 2018
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Hi, I'm having a question about the ASrock Z370 Taichi.

I would like to run two GPUs (Nvidia, no SLI, GPUs used separately) in x8, however not as the manual suggests in PCIE2 and PCIE4, but in PCIE2 and PCIE5. Is this possible? The manual doesn't give an answer.

Background of the question is simply that I want to have more space between the GPUs for better ventilation, and running two GPUs it feels stupid not to use the top and bottom slots.

If the Z370 Taichi cannot do that, are there any other motherboards that can? Or have larger spacing between PCIE slots?