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Qwen3.5-0.8B · Q4_K_S

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Intel Arc B58012GBvLLM v0.49L2 Cross-framework verified

This page aggregates 1 real-world runs of Qwen3.5-0.8B (Q4_K_S) on Intel Arc B580 with vLLM, contributed by 1 independent source platforms; metrics are averages of published measurements.

137.77 tok/s

Decode

Decode speed

674.05 tok/s

Prefill

Prefill speed

1.07 s

TTFT

Time to first token

3.41 GB

VRAM

VRAM usage

L2 Cross-framework verified

1

Measured runs

1

Independent sources

Other

Source platforms

Today

Last verified

Performance

  1. llama.cpp · Q4_K_M Decode 117.19 · Prefill 568.87 ·
  2. vLLM · Q4_K_S (current)Decode 137.77 · Prefill 674.05 ·

Core figures

Decode (avg)
137.77 tok/s
Prefill (avg)
674.05 tok/s
TTFT (avg)
1.07 s
VRAM (avg)
3.41 GB
MTP acceptance rate
—
TTFB
1.1 GB
Power draw
267.1 W

Configuration

Member-level fields are taken from the most recent run

Model
Qwen3.5-0.8B
Quantization
Q4_K_S
Framework
vLLM
Version
v0.49
Context length
16384 tokens
Batch size
32
GPU layers
999
Flash Attention
Off

Hardware

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

GPU
Intel Arc B580
Nominal VRAM
12 GB
Measured VRAM (avg)
3.41 GB
OS
Ubuntu 24.04
Driver
Intel Arc 31.0.101.5186
CUDA
12.6
Power draw
267.1 W

Sources & evidence

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

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

    v0.49 · Ubuntu 24.04 · CUDA 12.6 · 16384 ctx

    137.77 tok/s

    Decode

    674.05 tok/s

    Prefill

    1.07 s

    TTFT

    3.41 GB

    VRAM

    —

    MTP

    267.1 W

    Power draw

    L2 batch seed 2026-10-10: vLLM on hw_id=94 running model_id=51 at Q4_K_S