Qwen 3 30B-A3B (MoE) — VRAM Requirements
Written by Jakub Rusinowski · Last updated July 21, 2026
How much GPU VRAM you need to run Qwen 3 Qwen 3 30B-A3B (MoE) by Alibaba Cloud locally, a 30B-parameter model. Figures are quantized weights + KV cache + framework overhead from a memory-bandwidth roofline model.
Qwen 3 30B-A3B (MoE) needs about 19 GB VRAM at Q4_K_M.
VRAM by Quantization
| Quant | Bits/weight | Weights | Total VRAM |
|---|---|---|---|
| Q2_K | 2.63 | 9.9 GB | 10.7 GB |
| Q3_K_M | 3.41 | 12.8 GB | 13.6 GB |
| Q4_K_M | 4.83 | 18.1 GB | 18.9 GB |
| Q5_K_M | 5.67 | 21.3 GB | 22.1 GB |
| Q6_K | 6.56 | 24.6 GB | 25.4 GB |
| Q8_0 | 8.50 | 31.9 GB | 32.7 GB |
| F16 | 16.00 | 60.0 GB | 60.8 GB |
Switch quantization in the interactive calculator, or see the full Qwen 3 model page.
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[](https://llmconfigurator.com/en/vram-calculator/qwen3-30b-a3b)Estimates only — actual VRAM varies with context length, batch size, runtime and KV-cache settings.