AI

4x Radeon AI PRO R9700 + 2x RTX 3090 on one x16 slot, using a PCIe switch

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 08/11/2026, 23:47:25 UTC.

Briefings

A user on r/LocalLLaMA reported configuring a single x16 PCIe slot to run four Radeon AI PRO R9700 GPUs plus two RTX 3090s using a PCIe switch. The post was submitted on November 8, 2026, and includes community comments but lacks direct verification or performance benchmarks.

Key points

• A single x16 PCIe slot was configured to host four Radeon AI PRO R9700 GPUs and two RTX 3090 GPUs simultaneously.
• The configuration utilized an external PCIe switch to connect the four GPUs to the single slot.

Context

This configuration represents a high-density GPU setup for local LLM training, leveraging a single PCIe slot to maximize compute throughput. The post originates from the r/LocalLLaMA subreddit, indicating interest in local AI infrastructure.

Limitations

The evidence is limited to a single user post on a subreddit without external verification or performance benchmarks. The specific impact of the PCIe switch on stability or latency is unverified, and the long-term reliability of this extreme configuration remains unknown.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 09/11/2026, 01:30:43 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

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