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Qwen3.6-27B · IQ1_S

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NVIDIA RTX 509032GBllama.cpp v0.25L2 Cross-framework verified

This page aggregates 1 real-world runs of Qwen3.6-27B (IQ1_S) on NVIDIA RTX 5090 with llama.cpp, contributed by 1 independent source platforms; metrics are averages of published measurements.

273.05 tok/s

Decode

Decode speed

882.7 tok/s

Prefill

Prefill speed

2.42 s

TTFT

Time to first token

25.91 GB

VRAM

VRAM usage

L2 Cross-framework verified

1

Measured runs

1

Independent sources

Other

Source platforms

Today

Last verified

Performance

  1. llama.cpp · IQ1_S (current)Decode 273.05 · Prefill 882.7 ·

Core figures

Decode (avg)
273.05 tok/s
Prefill (avg)
882.7 tok/s
TTFT (avg)
2.42 s
VRAM (avg)
25.91 GB
MTP acceptance rate
—
TTFB
2.18 GB
Power draw
432 W

Configuration

Member-level fields are taken from the most recent run

Model
Qwen3.6-27B
Quantization
IQ1_S
Framework
llama.cpp
Version
v0.25
Context length
8192 tokens
Batch size
256
GPU layers
20
Flash Attention
On

Hardware

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

GPU
NVIDIA RTX 5090
Nominal VRAM
32 GB
Measured VRAM (avg)
25.91 GB
OS
Windows 11 23H2
Driver
565.57
CUDA
12.4
Power draw
432 W

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

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

    v0.25 · Windows 11 23H2 · CUDA 12.4 · 8192 ctx

    273.05 tok/s

    Decode

    882.7 tok/s

    Prefill

    2.42 s

    TTFT

    25.91 GB

    VRAM

    —

    MTP

    432 W

    Power draw

    L2 batch seed 2026-10-10: llama.cpp on hw_id=13 running model_id=6 at IQ1_S