Can I Run Qwen 3 on NVIDIA GeForce RTX 4090?
作者： Jakub Rusinowski · 最后更新： 2026年7月12日
Yes, comfortably — you'll have ~4.2 GB of headroom running Qwen 3 32B at Q4_K_M (19.8 GB, ~41 tok/s (est.)) with room for up to 8K context.
See what else this hardware can run →
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NVIDIA GeForce RTX 4090 Specs
| VRAM | 24 GB |
| Memory Bandwidth | 1008 GB/s |
Qwen 3 32B on the NVIDIA GeForce RTX 4090: VRAM by quantization
| Quant | VRAM needed | Fits 24 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 67.5 GB | ✗ No | — | — |
| Q8_0 | 36.7 GB | ✗ No | — | Build for this |
| Q6_K | 28.8 GB | ✗ No | — | — |
| Q5_K_M | 25.1 GB | ✗ No | — | Build for this |
| Q4_K_M | 21.7 GB | ✓ Yes | 8K | Build for this |
| Q3_K_M | 15.9 GB | ✓ Yes | 32K | — |
| Q2_K | 12.7 GB | ✓ Yes | 32K | — |
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 24 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 4090: 8K 22.8 GB · 32K 29.2 GB ✗ · 125K 54.2 GB ✗. Past 32K it no longer fits 24 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Qwen 3 32B on 32 GB of system RAM, CPU only: runs comfortably.
Qwen 3 Sizes That Fit the NVIDIA GeForce RTX 4090
| Qwen 3 32B | Q4_K_M · 19.8 GB · ~41 tok/s (est.) |
| Qwen 3 30B-A3B (MoE) | Q4_K_M · 18.4 GB · ~208 tok/s (est.) |
| Qwen 3 14B | Q4_K_M · 8.9 GB · ~80 tok/s (est.) |
| Qwen 3 8B | Q4_K_M · 5 GB · ~122 tok/s (est.) |
At 2 hrs/day, buying (~$1,599) beats renting at $0.34/hr after about 6.5 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Can I run Qwen 3 on the NVIDIA GeForce RTX 4090?
Yes, comfortably — you'll have ~4.2 GB of headroom running Qwen 3 32B at Q4_K_M (19.8 GB, ~41 tok/s (est.)) with room for up to 8K context.
What's the best Qwen 3 size for the NVIDIA GeForce RTX 4090?
Qwen 3 32B at Q4_K_M quantization (19.8 GB), estimated ~41 tokens/sec, up to 8K context.
Every Qwen 3 size on the NVIDIA GeForce RTX 4090
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Qwen 3 235B-A22B (MoE) | 141.9 GB | Does not fit | — |
| Qwen 3 32B | 19.8 GB | Runs | ~41 tok/s |
| Qwen 3 30B-A3B (MoE) | 18.4 GB | Runs | ~208 tok/s |
| Qwen 3 14B | 8.9 GB | Runs | ~80 tok/s |
| Qwen 3 8B | 5 GB | Runs | ~122 tok/s |
Qwen 3 on Other GPUs
Popular Models on the NVIDIA GeForce RTX 4090
VRAM Tier
Troubleshooting
Buying Guide
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