Can I Run Qwen 3 235B-A22B (MoE) on NVIDIA GeForce RTX 4070?
作者： Jakub Rusinowski · 最后更新： 2026年9月19日
No. Qwen 3 235B-A22B (MoE) needs 141.9 GB at Q4_K_M and the NVIDIA GeForce RTX 4070 has only 12 GB. No quantization we publish closes a gap that size.
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The numbers
| Model | Qwen 3 235B-A22B (MoE) |
| Parameters | 235B (22B active) |
| Quantization | Q4_K_M |
| VRAM needed | 141.9 GB |
| NVIDIA GeForce RTX 4070 VRAM | 12 GB |
| Verdict | Does not fit |
Qwen 3 235B-A22B (MoE) on the NVIDIA GeForce RTX 4070: VRAM by quantization
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 471.6 GB | ✗ No | — | — |
| Q8_0 | 251.3 GB | ✗ No | — | — |
| Q6_K | 194.3 GB | ✗ No | — | — |
| Q5_K_M | 168.1 GB | ✗ No | — | — |
| Q4_K_M | 143.5 GB | ✗ No | — | — |
| Q3_K_M | 101.8 GB | ✗ No | — | — |
| Q2_K | 78.8 GB | ✗ No | — | — |
Assumes a 4K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 12 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the NVIDIA GeForce RTX 4070: 8K 144.3 GB ✗ · 32K 149 GB ✗ · 125K 167.3 GB ✗. Past 8K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
What to do next
Either step down to a smaller size in this family, or move to a Apple M2 Ultra (192 GB), the cheapest card we track with enough VRAM.
No compatible GPU? Qwen 3 235B-A22B (MoE) on 192 GB of system RAM, CPU only: runs comfortably.
Cheapest card we track with enough VRAM for Qwen 3 235B-A22B (MoE):
Qwen 3 235B-A22B (MoE) needs ~142 GB but this GPU has 12 GB. Rent a 2× A100 (160 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Other Qwen 3 sizes on the NVIDIA GeForce RTX 4070
- Qwen 3 32B — does not fit (19.8 GB)
- Qwen 3 30B-A3B (MoE) — does not fit (18.4 GB)
- Qwen 3 14B — runs (8.9 GB)
- Qwen 3 8B — runs (5 GB)
Qwen 3 235B-A22B (MoE) on nearby hardware
- Intel Arc B570 (10 GB) — does not fit
- NVIDIA GeForce RTX 5080 (16 GB) — does not fit
All Qwen 3 sizes on the NVIDIA GeForce RTX 4070 | Qwen 3 235B-A22B (MoE) model page | NVIDIA GeForce RTX 4070 GPU page | Check your hardware