Can the RTX 5090 run Llama 3.3 70B?
No. Llama 3.3 70B needs about 45 GB and the RTX 5090 has at most 32 GB of VRAM. Ollama can still start it by putting part of the model in system RAM, but it runs several times slower. The most capable model it runs well is Qwen3 32B, at about 49 tok/s.
Llama 3.3 70B needsAbout 45 GB
RTX 5090 has32 GB VRAM
Bandwidth1792 GB/s
Estimated speedDoesn't fit
What runs Llama 3.3 70B
These cards have the memory for it, nearest to the RTX 5090 first. The cheapest build on our list that runs it well is the Workstation + 2× RTX 3090, from $3,500 used, at about 12 tok/s.
How we estimate
Speed is roughly memory bandwidth divided by the weights read per token, calibrated on our own rack. Sizes are Ollama's default 4-bit downloads plus about 1.2 GB for context. Real results are usually within about a third. Measured it yourself? Send us the number.
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