Running Qwen 27B on 3x 2080Ti at 55tps: Optimal Config Shared
AccountGotLocked69 · reddit · 2026-08-01
A developer achieved 55 tokens/s running the Qwen 27B Q5 model using llama.cpp on a rig with 3x RTX 2080 Ti (11GB) and a Threadripper 3970X.
They shared the optimal launch parameters, highlighting key optimizations:
- Enabling flash-attn (flash attention)
- Compressing KV cache to q80 precision
- Using tensor split mode and disabling mmap
- Enabling draft-mtp for speculative decoding (max draft of 3)
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