← Can It Run? — GPU compatibility matrix · Local LLMs guide
Llama 3.3 70B needs 40 GB VRAM at Q4. The RTX 5090 32GB has 32 GB.
🦙 Llama 3.3 70B (Meta) is a 70B-parameter model for near-GPT-4 quality for complex tasks. Frontier-class open model, best for demanding use cases. The question is whether the RTX 5090 32GB’s 32 GB of VRAM can hold it — here’s the exact math.
VRAM requirements
| Quantization | VRAM needed | RTX 5090 32GB |
|---|---|---|
| Q4_K_M (recommended) | 40 GB | ❌ |
| Q8_0 (near-lossless) | 72 GB | ❌ |
Why it won’t fit (and what to do)
Llama 3.3 70B needs 40 GB at Q4 but the RTX 5090 32GB has only 32 GB — you’re 8 GB short. You can offload layers to system RAM, but expect single-digit tokens/sec (painfully slow for chat).
About the RTX 5090 32GB
Architecture: Blackwell · VRAM: 32 GB · Price: ~$2,000+.
Good: 32GB + Blackwell speed — runs 70B at Q4 on a single card
Watch out: Very expensive, high power draw, hard to buy at MSRP
Check current RTX 5090 32GB price on Amazon →
Related checks
Other models on the RTX 5090 32GB
🎯 LLM Hardware Checker
Enter your exact GPU + RAM, see every model you can run.
💾 VRAM Requirements
Exact VRAM per model at Q4/Q5/Q8/FP16 with context scaling.
Frequently asked questions
Can the RTX 5090 32GB run Llama 3.3 70B?
No — not enough VRAM without CPU offloading. Llama 3.3 70B needs 40 GB VRAM at Q4_K_M; the RTX 5090 32GB has 32 GB.
How much VRAM does Llama 3.3 70B need?
Llama 3.3 70B needs about 40 GB at Q4_K_M (recommended) and 72 GB at Q8_0.
How many tokens per second will the RTX 5090 32GB get on Llama 3.3 70B?
It won't fit in VRAM; with CPU offloading expect very slow single-digit tokens/sec.