Qwen3.8-27B-ctx8k on RTX 4090 (24GB)
MeasuredOn 2026-10-22, Qwen3.8-27B-ctx8k Q4_K_M ran at 43.3 tok/s (chat-short) on an RTX 4090 (24GB) with llama.cpp. Run r_fttw19bkyio.
Workload results
| Workload | Backend | Model | decode tok/s | prefill tok/s | TTFT | p50 | p95 |
|---|---|---|---|---|---|---|---|
| chat-short | llama.cpp@0.7.0-dev (build 11803, commit a37cc4610) | Qwen3.8-27B-ctx8kQ4_K_M | 43.33tok/s | 461.3tok/s | 334ms | 23.0ms | 23.1ms |
| chat-long | llama.cpp@0.7.0-dev (build 11803, commit a37cc4610) | Qwen3.8-27B-ctx8kQ4_K_M | 42.96tok/s | 1,992.2tok/s | 1,618ms | 23.2ms | 23.4ms |
| concurrent-decode | llama.cpp@0.7.0-dev (build 11803, commit a37cc4610) | Qwen3.8-27B-ctx8kQ4_K_M | 43.35tok/s | — | — | 23.0ms | 23.1ms |
| agent-trace | llama.cpp@0.7.0-dev (build 11803, commit a37cc4610) | Qwen3.8-27B-ctx8kQ4_K_M | 42.43tok/s | 3,792.7tok/s | 592ms | 23.2ms | 23.5ms |
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https://llm-speed.com/r/r_fttw19bkyioRelated benchmarks
- More Qwen3.8-27B-ctx8k benchmarks — every backend and rig that has run this model.
- More RTX 4090 (24GB) LLM benchmarks — every model measured on this hardware.
Provenance
- Run ID
- r_fttw19bkyio
- Fingerprint hash
- Public key
- IDFSQ/4k62i4OK/E2Rz6zEoVnhDnzvJHex5IPfMRn+A=
- Received
- 2026-10-22 10:47:59