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iFlytek Spark-X2.5-4B · Q6_K

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NVIDIA RTX PRO 6000 Blackwell 96GB96GBllama.cpp v0.21L2 Cross-framework verified

This page aggregates 1 real-world runs of iFlytek Spark-X2.5-4B (Q6_K) on NVIDIA RTX PRO 6000 Blackwell 96GB with llama.cpp, contributed by 1 independent source platforms; metrics are averages of published measurements.

350.22 tok/s

Decode

Decode speed

1,535.88 tok/s

Prefill

Prefill speed

0.34 s

TTFT

Time to first token

10.5 GB

VRAM

VRAM usage

L2 Cross-framework verified

1

Measured runs

1

Independent sources

Other

Source platforms

12 days ago

Last verified

Performance

  1. llama.cpp · Q6_K (current)Decode 350.22 · Prefill 1535.88 ·
  2. Strata · Q3_K_S Decode 316.72 · Prefill 1709.01 ·

Core figures

Decode (avg)
350.22 tok/s
Prefill (avg)
1,535.88 tok/s
TTFT (avg)
0.34 s
VRAM (avg)
10.5 GB
MTP acceptance rate
—
TTFB
2.8 GB
Power draw
351.3 W

Configuration

Member-level fields are taken from the most recent run

Model
iFlytek Spark-X2.5-4B
Quantization
Q6_K
Framework
llama.cpp
Version
v0.21
Context length
32768 tokens
Batch size
512
GPU layers
99
Flash Attention
On

Hardware

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

GPU
NVIDIA RTX PRO 6000 Blackwell 96GB
Nominal VRAM
96 GB
Measured VRAM (avg)
10.5 GB
OS
Windows 11 23H2
Driver
560.94
CUDA
12.4
Power draw
351.3 W

Sources & evidence

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

  1. L2 Cross-framework verifiedOtherOriginal link Verified on 2026-10-24

    v0.21 · Windows 11 23H2 · CUDA 12.4 · 32768 ctx

    350.22 tok/s

    Decode

    1,535.88 tok/s

    Prefill

    0.34 s

    TTFT

    10.5 GB

    VRAM

    —

    MTP

    351.3 W

    Power draw

    L2 batch seed 2026-10-24: llama.cpp on hw_id=68 running model_id=75 at Q6_K