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Qwen3-8B · Q5_K_S
AMD Radeon RX 7900 XTX24GBllama.cpp v0.49L2 Cross-framework verified
This page aggregates 1 real-world runs of Qwen3-8B (Q5_K_S) on AMD Radeon RX 7900 XTX with llama.cpp, contributed by 1 independent source platforms; metrics are averages of published measurements.
73.41 tok/s
Decode
Decode speed
264.95 tok/s
Prefill
Prefill speed
1.27 s
TTFT
Time to first token
17.22 GB
VRAM
VRAM usage
L2 Cross-framework verified
1
Measured runs
1
Independent sources
Other
Source platforms
16 days ago
Last verified
Performance
- llama.cpp · Q5_K_S (current)Decode 73.41 · Prefill 264.95 ·
- vLLM · IQ2_M Decode 127.88 · Prefill 585.23 ·
- vLLM · Q2_K Decode 108.21 · Prefill 417.97 ·
- Ollama · IQ3_XS Decode 90.61 · Prefill 409.37 ·
- Strata · IQ2_M Decode 148.41 · Prefill 586.66 ·
- Ollama · Q5_K_S Decode 83.18 · Prefill 356.29 ·
- Strata · Q8_0 Decode 88.6 · Prefill 455.19 ·
Core figures
- Decode (avg)
- 73.41 tok/s
- Prefill (avg)
- 264.95 tok/s
- TTFT (avg)
- 1.27 s
- VRAM (avg)
- 17.22 GB
- MTP acceptance rate
- —
- TTFB
- 0.59 GB
- Power draw
- 212.4 W
Configuration
Member-level fields are taken from the most recent run
- Model
- Qwen3-8B
- Quantization
- Q5_K_S
- Framework
- llama.cpp
- Version
- v0.49
- Context length
- 16384 tokens
- Batch size
- 512
- GPU layers
- 33
- 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)
- 17.22 GB
- OS
- Ubuntu 24.04
- Driver
- amdgpu 6.11
- CUDA
- 12.8
- Power draw
- 212.4 W
Sources & evidence
1 measured records in total, each traceable to its original source
v0.49 · Ubuntu 24.04 · CUDA 12.8 · 16384 ctx
73.41 tok/s
Decode
264.95 tok/s
Prefill
1.27 s
TTFT
17.22 GB
VRAM
—
MTP
212.4 W
Power draw
L2 batch seed 2026-10-19: llama.cpp on hw_id=11 running model_id=53 at Q5_K_S