llamaperf

Qwen3.8 27B

on Unknown GPU · llama.cpp · 16,384 ctx

Tone: mixed
Oct 12, 2026
Throughput
2.5 t/s gen
Quant
Q4_K_M (GGUF)
System RAM
24 GB

Use cases

coding

Summary

User reports Qwen3.8 27B at about 2.5 tok/s on a OnePlus 13 phone with 24 GB RAM. Setup is llama.cpp with Q4_K_M at 16K context, using around 21.2 GB of memory; the LLM and TTS run on the NPU. User also runs Qwen3.5 9B at around 5 tok/s using about 16.1 GB RAM with always-on ASR and TTS. Heat is the main problem, so inference pauses when the phone gets too hot, and lower-power modes reduce TPS.