Qwen3.8-27B · IQ2_XS
This page aggregates 1 real-world runs of Qwen3.8-27B (IQ2_XS) on Apple M3 Ultra with llama.cpp, contributed by 1 independent source platforms; metrics are averages of published measurements.
70.2 tok/s
Decode
Decode speed
526.5 tok/s
Prefill
Prefill speed
0.19 s
TTFT
Time to first token
9.6 GB
VRAM
VRAM usage
1
Measured runs
1
Independent sources
Other
Source platforms
Today
Last verified
Performance
- llama.cpp · IQ2_XS (current)Decode 70.2 · Prefill 526.5 ·
- llama.cpp · Q5_K_M Decode 31.9 · Prefill 239.3 ·
- llama.cpp · Q4_K_M Decode 39 · Prefill 292.5 ·
Core figures
- Decode (avg)
- 70.2 tok/s
- Prefill (avg)
- 526.5 tok/s
- TTFT (avg)
- 0.19 s
- VRAM (avg)
- 9.6 GB
- MTP acceptance rate
- —
- TTFB
- — GB
- Power draw
- — W
Configuration
Member-level fields are taken from the most recent run
- Model
- Qwen3.8-27B
- Quantization
- IQ2_XS
- Framework
- llama.cpp
- Version
- b4200
- Context length
- 4096 tokens
- Batch size
- 512
- GPU layers
- 99
- Flash Attention
- On
Hardware
Nominal and measured figures are shown side by side; whether it runs is the reader's call
- GPU
- Apple M3 Ultra
- Nominal VRAM
- 512 GB
- Measured VRAM (avg)
- 9.6 GB
- OS
- Linux
- Driver
- 570.65
- CUDA
- 12.6
Get started
Original model resources
Base model resources may not match this quantization. Use the verified deployment weights above when available.
Sources & evidence
1 measured records in total, each traceable to its original source
b4200 · Linux · CUDA 12.6 · 4096 ctx
70.2 tok/s
Decode
526.5 tok/s
Prefill
0.19 s
TTFT
9.6 GB
VRAM
—
MTP
— W
Power draw
L0 理论估算（add-500-records-batch2）