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Qwen3.5-4B · IQ1_S

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Apple M5 Max128GBOllama v0.32L2 Cross-framework verified

This page aggregates 1 real-world runs of Qwen3.5-4B (IQ1_S) on Apple M5 Max with Ollama, contributed by 1 independent source platforms; metrics are averages of published measurements.

115.64 tok/s

Decode

Decode speed

505.04 tok/s

Prefill

Prefill speed

1.61 s

TTFT

Time to first token

5.63 GB

VRAM

VRAM usage

L2 Cross-framework verified

1

Measured runs

1

Independent sources

Other

Source platforms

17 days ago

Last verified

Performance

  1. llama.cpp · Q3_K_L Decode 104.81 · Prefill 351.35 ·
  2. Ollama · IQ1_S (current)Decode 115.64 · Prefill 505.04 ·
  3. Ollama · Q5_K_S Decode 65.93 · Prefill 214.6 ·
  4. llama.cpp · IQ3_S Decode 279.98 · Prefill 1354 ·
  5. Strata · Q3_K_L Decode 354.31 · Prefill 1310.91 ·
  6. Strata · Q5_K_S Decode 279.1 · Prefill 1192.93 ·
  7. vLLM · IQ2_M Decode 364.07 · Prefill 1250.03 ·
  8. vLLM · Q4_K_S Decode 256.46 · Prefill 848.78 ·
  9. Strata · Q5_K_M Decode 272.64 · Prefill 963.9 ·

Core figures

Decode (avg)
115.64 tok/s
Prefill (avg)
505.04 tok/s
TTFT (avg)
1.61 s
VRAM (avg)
5.63 GB
MTP acceptance rate
—
TTFB
0.93 GB
Power draw
69.4 W

Configuration

Member-level fields are taken from the most recent run

Model
Qwen3.5-4B
Quantization
IQ1_S
Framework
Ollama
Version
v0.32
Context length
16384 tokens
Batch size
256
GPU layers
99
Flash Attention
Off

Hardware

Nominal and measured figures are shown side by side; whether it runs is the reader's call

GPU
Apple M5 Max
Nominal VRAM
128 GB
Measured VRAM (avg)
5.63 GB
OS
macOS 26.1
Power draw
69.4 W

Sources & evidence

1 measured records in total, each traceable to its original source

  1. L2 Cross-framework verifiedOtherOriginal link Verified on 2026-10-19

    v0.32 · macOS 26.1 · 16384 ctx

    115.64 tok/s

    Decode

    505.04 tok/s

    Prefill

    1.61 s

    TTFT

    5.63 GB

    VRAM

    —

    MTP

    69.4 W

    Power draw

    L2 batch seed 2026-10-19: Ollama on hw_id=28 running model_id=48 at IQ1_S