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Llama-3.1-8B-Instruct · Q3_K_L

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Apple M5 Max128GBllama.cpp v0.53L2 Cross-framework verified

This page aggregates 1 real-world runs of Llama-3.1-8B-Instruct (Q3_K_L) on Apple M5 Max with llama.cpp, contributed by 1 independent source platforms; metrics are averages of published measurements.

81.19 tok/s

Decode

Decode speed

358.64 tok/s

Prefill

Prefill speed

1.18 s

TTFT

Time to first token

14.2 GB

VRAM

VRAM usage

L2 Cross-framework verified

1

Measured runs

1

Independent sources

Other

Source platforms

16 days ago

Last verified

Performance

  1. llama.cpp · IQ2_M Decode 101.46 · Prefill 460.44 ·
  2. llama.cpp · Q3_K_L (current)Decode 81.19 · Prefill 358.64 ·
  3. Ollama · IQ3_XS Decode 82.82 · Prefill 392.75 ·
  4. Ollama · Q3_K_S Decode 79.81 · Prefill 418 ·

Core figures

Decode (avg)
81.19 tok/s
Prefill (avg)
358.64 tok/s
TTFT (avg)
1.18 s
VRAM (avg)
14.2 GB
MTP acceptance rate
—
TTFB
0.65 GB
Power draw
60.9 W

Configuration

Member-level fields are taken from the most recent run

Model
Llama-3.1-8B-Instruct
Quantization
Q3_K_L
Framework
llama.cpp
Version
v0.53
Context length
16384 tokens
Batch size
512
GPU layers
33
Flash Attention
On

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)
14.2 GB
OS
macOS 26.1
Power draw
60.9 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

    v0.53 · macOS 26.1 · 16384 ctx

    81.19 tok/s

    Decode

    358.64 tok/s

    Prefill

    1.18 s

    TTFT

    14.2 GB

    VRAM

    —

    MTP

    60.9 W

    Power draw

    L2 batch seed 2026-10-19: llama.cpp on hw_id=28 running model_id=68 at Q3_K_L