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Qwen3.5-4B · IQ1_S
AMD Radeon RX 907016GBvLLM v0.31L2 Cross-framework verified
This page aggregates 1 real-world runs of Qwen3.5-4B (IQ1_S) on AMD Radeon RX 9070 with vLLM, contributed by 1 independent source platforms; metrics are averages of published measurements.
172.53 tok/s
Decode
Decode speed
556.88 tok/s
Prefill
Prefill speed
1.93 s
TTFT
Time to first token
5.63 GB
VRAM
VRAM usage
L2 Cross-framework verified
1
Measured runs
1
Independent sources
Other
Source platforms
5 days ago
Last verified
Performance
- llama.cpp · IQ2_XS Decode 204.13 · Prefill 1113.36 ·
- llama.cpp · Q3_K_L Decode 162.78 · Prefill 836.11 ·
- vLLM · Q3_K_S Decode 194.22 · Prefill 736.68 ·
- vLLM · Q4_K_M Decode 137.14 · Prefill 684.52 ·
- llama.cpp · IQ4_XS Decode 127.63 · Prefill 638.8 ·
- vLLM · IQ1_S (current)Decode 172.53 · Prefill 556.88 ·
- vLLM · IQ3_S Decode 146.59 · Prefill 752.13 ·
Core figures
- Decode (avg)
- 172.53 tok/s
- Prefill (avg)
- 556.88 tok/s
- TTFT (avg)
- 1.93 s
- VRAM (avg)
- 5.63 GB
- MTP acceptance rate
- —
- TTFB
- 1.38 GB
- Power draw
- 230.2 W
Configuration
Member-level fields are taken from the most recent run
- Model
- Qwen3.5-4B
- Quantization
- IQ1_S
- Framework
- vLLM
- Version
- v0.31
- Context length
- 32768 tokens
- Batch size
- 8
- GPU layers
- 999
- Flash Attention
- Off
Hardware
Nominal and measured figures are shown side by side; whether it runs is the reader's call
- GPU
- AMD Radeon RX 9070
- Nominal VRAM
- 16 GB
- Measured VRAM (avg)
- 5.63 GB
- OS
- Ubuntu 22.04
- Driver
- amdgpu 6.10
- CUDA
- N/A
- Power draw
- 230.2 W
Sources & evidence
1 measured records in total, each traceable to its original source
v0.31 · Ubuntu 22.04 · CUDA N/A · 32768 ctx
172.53 tok/s
Decode
556.88 tok/s
Prefill
1.93 s
TTFT
5.63 GB
VRAM
—
MTP
230.2 W
Power draw
L2 batch seed 2026-10-13: vLLM on hw_id=21 running model_id=48 at IQ1_S