NVIDIA GeForce RTX 4090 × Qwen3 8B
Can the RTX 4090 run Qwen3 8B?
Yes
Yes. The RTX 4090 can run Qwen3 8B at up to F16 (needs ~18.9 GB of 22.8 GB usable), at an estimated ~143 tokens/sec at Q4_K_M.
Speed is estimated from memory bandwidth calibrated with a measured 186.21 tok/s Llama 2 7B Q4_0 result (source). No direct public benchmark of this exact pair is recorded yet.
By quantization (8K context)
| Quant | Memory needed | Fits? | Est. tok/s |
|---|---|---|---|
| Q3_K_M | 6.1 GB | ✅ | ~178 |
| Q4_K_M | 7.1 GB | ✅ | ~143 |
| Q5_K_M | 8.0 GB | ✅ | ~122 |
| Q6_K | 9.0 GB | ✅ | ~105 |
| Q8_0 | 11.0 GB | ✅ | ~81.7 |
| F16 | 18.9 GB | ✅ | ~43.4 |
Fastest hardware for Qwen3 8B
- NVIDIA GeForce RTX 5090 — ~223 tok/s at Q4_K_M
- AMD Radeon RX 7900 XTX — ~142 tok/s at Q4_K_M
- NVIDIA GeForce RTX 5080 — ~140 tok/s at Q4_K_M
- NVIDIA GeForce RTX 5070 Ti — ~136 tok/s at Q4_K_M
- NVIDIA GeForce RTX 3090 Ti — ~132 tok/s at Q4_K_M
No suitable GPU? Rent one by the hour on Vast.ai or RunPod (affiliate links).
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