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User reports issues loading large MoE models after adding second RTX 3060

A user with dual RTX 3060 GPUs found that large MoE models like Qwen3.5-122B-A10B fail to load, while dense models work. After troubleshooting, they discovered that limiting VRAM usage to 12 layers allows the 122B model to load, and a PC restart plus GPU priority adjustment fixed the 35B model.

11 engagement·1 source·Sat, Jul 11, 2026, 05:46 PM
A Reddit user reported that after adding a second RTX 3060, they could no longer load large MoE models such as Qwen3.5-122B-A10B and Qwen3.6-35B-A3B, while dense models continued to work. The user found that limiting the 122B model to 12 layers in VRAM allowed it to load. The 35B model loaded after a PC restart and changing GPU priority back to the 3060 installed in PCIe 5.0 x16 from the second GPU in PCIe 3.0 x1. This highlights the complexity of multi-GPU setups for MoE models.

Entities

RTX 3060(tool)Qwen3.5-122B-A10B(model)Qwen3.6 35B(model)Qwen3.6 27B(model)Qwen3.6-35B-A3B(model)

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