GPUFits
Can RTX 4070 Ti Super run Qwen3 30B-A3B?
❌ Not feasible
Qwen3 30B-A3B @ Q4_K_M · 8K context
Needed
21.0 GB
Usable
16.0 GB
VRAM breakdown
| Weights (Q4_K_M) | 18.7 GB |
| KV cache (8K context) | 0.8 GB |
| Runtime overhead | 1.5 GB |
| Total | 21.0 GB |
Computed at 8K context with fp16 KV cache. Longer contexts need more VRAM — use the VRAM calculator for other settings.
Recommended quantization
Q2_K
Estimated generation speed
~385 tok/s @ Q2_K
Theoretical estimates based on published architecture data and measured GGUF sizes; real-world speed varies ±30%.
Smaller models this GPU runs well
FAQ
- How much VRAM does Qwen3 30B-A3B need?
- At Q4_K_M with 8K context: 18.7GB weights + 0.8GB KV cache + 1.5GB runtime overhead = 21.0GB total. RTX 4070 Ti Super offers 16.0GB usable VRAM, so the verdict is: Not feasible.
- What is the best quantization for Qwen3 30B-A3B on RTX 4070 Ti Super?
- Q2_K — the highest tier that still fits within 16.0GB usable VRAM at 8K context. Lower tiers (Q3/Q2) fit too but cost noticeable quality.
- How fast does Qwen3 30B-A3B run on RTX 4070 Ti Super?
- About 385 tokens/s at Q2_K (theoretical estimate, ±30% in real-world use).
Check another combination in the GPU Checker →
Data verified 2026-08-04