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Six GPUs on One X16 Slot: R9700s and RTX 3090s Behind a PCIe Switch

AI · Hardware · 2026-11-08 22:52

A Broadcom PCIe switch enables six GPUs, including R9700s and RTX 3090s, to run in parallel on a single consumer motherboard. This setup demonstrates mixed-GPU performance for large language models, showcasing how PCIe switching can overcome traditional slot limitations.

Source: doug.sh


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