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Qwen3.8 27B on RX 7900 XTX: Ollama ROCm vs llama.cpp Vulkan results

This story is from 2026-09-04. It is preserved in the archive; the latest stories are on the live feed.

I’ve been setting up Qwen3.8 27B on a new Linux machine and thought I’d share some numbers because I saw the recent discussions around 7900 XTX performance. System Ryzen 9 9950X RX 7900 XTX 24GB 32GB RAM Ubuntu 26.04.1 Mesa/RADV 26.0.8 Qwen3.8 27B Q4_K_M Ollama / ROCm Context: 65,536 Model residenc…

Read the full story at r/LocalLLM ↗

Timeline · 3 reports

  1. 2026-09-05 14:20 · r/LocalLLaMA
    NInfer vs llama.cpp vs vLLM: quality + speed comparison for Qwen3.8-27B NVFP4 on RTX 5090
  2. 2026-09-04 20:20 · r/LocalLLM
    Moving 2× RX 7900 XTX (+2× MI50) from a 2013 Xeon board to EPYC to finally get PCIe P2P for tensor parallel — can anyone confirm this config before I buy?
  3. 2026-09-04 20:15 · r/LocalLLM
    Qwen3.8 27B on RX 7900 XTX: Ollama ROCm vs llama.cpp Vulkan results

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