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Qwen3.8-27B on a single RTX 5090 (32GB) + 64GB DDR5-6000 — looking for real t/s numbers (llama.cpp / vLLM / sglang)

Looking at this checkpoint: lued/Qwen3.8-27B-INT8-W8A16-MTP — INT8 W8A16, ~29.4GB on disk, native 262K context, BF16 MTP head for speculative decoding. It's explicitly built as an Ampere-optimized checkpoint (W8A16 Marlin path) since Ampere lacks native FP8 tensor cores. The only published benchmar…

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  1. 2026-09-19 10:21 · r/LocalLLM
    Qwen3.8-27B on a single RTX 5090 (32GB) + 64GB DDR5-6000 — looking for real t/s numbers (llama.cpp / vLLM / sglang)

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