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iFlytek Spark-X2.5-4B · Q4_K_M
NVIDIA RTX 4080 Super16GBStrata v0.44L2 Cross-framework verified
This page aggregates 1 real-world runs of iFlytek Spark-X2.5-4B (Q4_K_M) on NVIDIA RTX 4080 Super with Strata, contributed by 1 independent source platforms; metrics are averages of published measurements.
305.26 tok/s
Decode
Decode speed
1,292.84 tok/s
Prefill
Prefill speed
1.88 s
TTFT
Time to first token
8.99 GB
VRAM
VRAM usage
L2 Cross-framework verified
1
Measured runs
1
Independent sources
Other
Source platforms
12 days ago
Last verified
Performance
- llama.cpp · Q8_0 Decode 237.08 · Prefill 981.54 ·
- Strata · Q4_K_M (current)Decode 305.26 · Prefill 1292.84 ·
Core figures
- Decode (avg)
- 305.26 tok/s
- Prefill (avg)
- 1,292.84 tok/s
- TTFT (avg)
- 1.88 s
- VRAM (avg)
- 8.99 GB
- MTP acceptance rate
- 0.51
- TTFB
- 2.44 GB
- Power draw
- 277.4 W
Configuration
Member-level fields are taken from the most recent run
- Model
- iFlytek Spark-X2.5-4B
- Quantization
- Q4_K_M
- Framework
- Strata
- Version
- v0.44
- Context length
- 8192 tokens
- Batch size
- 512
- GPU layers
- 12
- Flash Attention
- On
Hardware
Nominal and measured figures are shown side by side; whether it runs is the reader's call
- GPU
- NVIDIA RTX 4080 Super
- Nominal VRAM
- 16 GB
- Measured VRAM (avg)
- 8.99 GB
- OS
- Windows 11 24H2
- Driver
- 572.83
- CUDA
- 12.4
- Power draw
- 277.4 W
Sources & evidence
1 measured records in total, each traceable to its original source
v0.44 · Windows 11 24H2 · CUDA 12.4 · 8192 ctx
305.26 tok/s
Decode
1,292.84 tok/s
Prefill
1.88 s
TTFT
8.99 GB
VRAM
0.51
MTP
277.4 W
Power draw
L2 batch seed 2026-10-24: Strata on hw_id=20 running model_id=75 at Q4_K_M