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Qwen3.5-4B · Q3_K_L
NVIDIA RTX 509032GBllama.cpp v0.30L2 Cross-framework verified
This page aggregates 1 real-world runs of Qwen3.5-4B (Q3_K_L) on NVIDIA RTX 5090 with llama.cpp, contributed by 1 independent source platforms; metrics are averages of published measurements.
338.21 tok/s
Decode
Decode speed
1,409.78 tok/s
Prefill
Prefill speed
2.14 s
TTFT
Time to first token
8.15 GB
VRAM
VRAM usage
L2 Cross-framework verified
1
Measured runs
1
Independent sources
Other
Source platforms
Today
Last verified
Performance
- llama.cpp · Q3_K_L (current)Decode 338.21 · Prefill 1409.78 ·
- vLLM · Q3_K_M Decode 356.1 · Prefill 1633.97 ·
- vLLM · Q3_K_S Decode 324.89 · Prefill 1253.12 ·
- Strata · Q4_K_S Decode 353.67 · Prefill 1676.75 ·
Core figures
- Decode (avg)
- 338.21 tok/s
- Prefill (avg)
- 1,409.78 tok/s
- TTFT (avg)
- 2.14 s
- VRAM (avg)
- 8.15 GB
- MTP acceptance rate
- —
- TTFB
- 2.71 GB
- Power draw
- 431.5 W
Configuration
Member-level fields are taken from the most recent run
- Model
- Qwen3.5-4B
- Quantization
- Q3_K_L
- Framework
- llama.cpp
- Version
- v0.30
- Context length
- 8192 tokens
- Batch size
- 512
- GPU layers
- 99
- Flash Attention
- Off
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)
- 8.15 GB
- OS
- Ubuntu 24.04
- Driver
- 555.85
- CUDA
- 12.8
- Power draw
- 431.5 W
Sources & evidence
1 measured records in total, each traceable to its original source
v0.30 · Ubuntu 24.04 · CUDA 12.8 · 8192 ctx
338.21 tok/s
Decode
1,409.78 tok/s
Prefill
2.14 s
TTFT
8.15 GB
VRAM
—
MTP
431.5 W
Power draw
L2 batch seed 2026-10-10: llama.cpp on hw_id=13 running model_id=48 at Q3_K_L