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gemma-4-12B-it · Q2_K

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NVIDIA RTX 409024GBvLLM v0.31L2 Cross-framework verified

This page aggregates 1 real-world runs of gemma-4-12B-it (Q2_K) on NVIDIA RTX 4090 with vLLM, contributed by 1 independent source platforms; metrics are averages of published measurements.

139.41 tok/s

Decode

Decode speed

531.29 tok/s

Prefill

Prefill speed

1.14 s

TTFT

Time to first token

15.96 GB

VRAM

VRAM usage

L2 Cross-framework verified

1

Measured runs

1

Independent sources

Other

Source platforms

Today

Last verified

Performance

  1. llama.cpp · IQ3_XS Decode 114.16 · Prefill 511.31 ·
  2. llama.cpp · Q4_K_S Decode 100.24 · Prefill 360.86 ·
  3. vLLM · Q2_K (current)Decode 139.41 · Prefill 531.29 ·
  4. Ollama · IQ4_XS Decode 95.26 · Prefill 447.14 ·
  5. Ollama · Q6_K Decode 71.51 · Prefill 296.42 ·
  6. vLLM · Q8_0 Decode 65.9 · Prefill 494.3 ·
  7. vLLM · Q5_K_M Decode 96.3 · Prefill 722.3 ·
  8. vLLM · Q4_K_M Decode 117.4 · Prefill 880.5 ·
  9. llama.cpp · Q8_0 Decode 60.5 · Prefill 453.8 ·
  10. llama.cpp · Q5_K_M Decode 88.3 · Prefill 662.3 ·
  11. llama.cpp · Q4_K_M Decode 107.7 · Prefill 807.8 ·

Core figures

Decode (avg)
139.41 tok/s
Prefill (avg)
531.29 tok/s
TTFT (avg)
1.14 s
VRAM (avg)
15.96 GB
MTP acceptance rate
—
TTFB
1.12 GB
Power draw
320 W

Configuration

Member-level fields are taken from the most recent run

Model
gemma-4-12B-it
Quantization
Q2_K
Framework
vLLM
Version
v0.31
Context length
4096 tokens
Batch size
16
GPU layers
999
Flash Attention
On

Hardware

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

GPU
NVIDIA RTX 4090
Nominal VRAM
24 GB
Measured VRAM (avg)
15.96 GB
OS
Ubuntu 24.04
Driver
570.86
CUDA
12.6
Power draw
320 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

    v0.31 · Ubuntu 24.04 · CUDA 12.6 · 4096 ctx

    139.41 tok/s

    Decode

    531.29 tok/s

    Prefill

    1.14 s

    TTFT

    15.96 GB

    VRAM

    —

    MTP

    320 W

    Power draw

    L2 batch seed 2026-10-10: vLLM on hw_id=1 running model_id=65 at Q2_K