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Qwen3.5-4B · Q4_K_S
AMD Radeon RX 7900 XTX24GBvLLM v0.47L2 Cross-framework verified
This page aggregates 1 real-world runs of Qwen3.5-4B (Q4_K_S) on AMD Radeon RX 7900 XTX with vLLM, contributed by 1 independent source platforms; metrics are averages of published measurements.
113.75 tok/s
Decode
Decode speed
494.84 tok/s
Prefill
Prefill speed
0.68 s
TTFT
Time to first token
8.65 GB
VRAM
VRAM usage
L2 Cross-framework verified
1
Measured runs
1
Independent sources
Other
Source platforms
17 days ago
Last verified
Performance
- vLLM · Q4_K_M Decode 100.76 · Prefill 500.94 ·
- vLLM · Q4_K_S (current)Decode 113.75 · Prefill 494.84 ·
- Ollama · Q3_K_L Decode 108.14 · Prefill 521.92 ·
- Ollama · Q3_K_M Decode 103.32 · Prefill 530.53 ·
- llama.cpp · Q3_K_S Decode 122.17 · Prefill 596.11 ·
- Strata · IQ3_S Decode 166.71 · Prefill 815.55 ·
- Ollama · IQ3_S Decode 128.5 · Prefill 561.01 ·
- Strata · Q3_K_M Decode 202.56 · Prefill 756.52 ·
Core figures
- Decode (avg)
- 113.75 tok/s
- Prefill (avg)
- 494.84 tok/s
- TTFT (avg)
- 0.68 s
- VRAM (avg)
- 8.65 GB
- MTP acceptance rate
- —
- TTFB
- 0.91 GB
- Power draw
- 224.7 W
Configuration
Member-level fields are taken from the most recent run
- Model
- Qwen3.5-4B
- Quantization
- Q4_K_S
- Framework
- vLLM
- Version
- v0.47
- Context length
- 4096 tokens
- Batch size
- 8
- 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
- AMD Radeon RX 7900 XTX
- Nominal VRAM
- 24 GB
- Measured VRAM (avg)
- 8.65 GB
- OS
- Windows 11 23H2
- Driver
- amdgpu 6.11
- CUDA
- 12.4
- Power draw
- 224.7 W
Sources & evidence
1 measured records in total, each traceable to its original source
v0.47 · Windows 11 23H2 · CUDA 12.4 · 4096 ctx
113.75 tok/s
Decode
494.84 tok/s
Prefill
0.68 s
TTFT
8.65 GB
VRAM
—
MTP
224.7 W
Power draw
L2 batch seed 2026-10-19: vLLM on hw_id=11 running model_id=48 at Q4_K_S