Can I Run Llama 3.2 Family on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?

Written by Jakub Rusinowski · Last updated August 15, 2026

Yes — comfortably

Yes, comfortably — Llama 3.2 11B Vision Instruct at Q8_0 needs about 13.4 GB of the 24 GB usable on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM), leaving ~10.6 GB spare and running at ~55.5 tok/s (estimated), with room for about 65,536 tokens of context.

Confidence: high · Recommended quantization: Q8_0 · Estimated speed: ~55.5 tok/s

RTX 4090 Desktop (24 GB VRAM, 64 GB RAM) — what it gives a model

Usable memory for models24 GB
Memory bandwidth1008 GB/s
Form factorDesktop
Operating systemWindows or Linux
Memory upgradeableYes

Llama 3.2 Family on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM): memory by quantization

QuantMemory neededFits 24 GB?Max contextEst. speedDownload
F1623.3 GB✓ Yes8K~32.1 tok/s21.2 GB
Q8_013.4 GB✓ Yes64K~55.5 tok/s11.3 GB
Q6_K10.8 GB✓ Yes64K~68.3 tok/s8.7 GB
Q5_K_M9.7 GB✓ Yes64K~76.5 tok/s7.5 GB
Q4_K_M8.5 GB✓ Yes64K~86.2 tok/s6.4 GB
Q3_K_M6.7 GB✓ Yes64K~109.8 tok/s4.5 GB
Q2_K5.6 GB✓ Yes64K~129.1 tok/s3.5 GB

Which Llama 3.2 Family sizes fit

VariantNeeds at Q4_K_MFits?Est. speed
Llama 3.2 90B Vision Instruct57.8 GB✗ Too large
Llama 3.2 11B Vision Instruct8.5 GB✓ Fits~86.2 tok/s
Llama 3.2 3B Instruct3.7 GB✓ Fits~184.1 tok/s
Llama 3.2 1B Instruct1.8 GB✓ Fits~292.9 tok/s

What to watch out for

RTX 4090 desktop limitations

Recommended setup

Ollama or llama.cpp (CUDA/ROCm) — vLLM if you need concurrent serving

How these numbers are calculated

FAQ

Can I run Llama 3.2 Family on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?

Yes, comfortably — Llama 3.2 11B Vision Instruct at Q8_0 needs about 13.4 GB of the 24 GB usable on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM), leaving ~10.6 GB spare and running at ~55.5 tok/s (estimated), with room for about 65,536 tokens of context.

Which quantization of Llama 3.2 Family should I use on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?

Q8_0 — it needs about 13.4 GB of the 24 GB available, downloads as roughly 11.3 GB, and runs at an estimated 55.5 tokens/sec with up to 64K of context.

What limits Llama 3.2 Family on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)?

Nothing binding — the model fits with headroom and generates at a usable speed on this hardware.

Which runtime should I use?

Ollama or llama.cpp (CUDA/ROCm) — vLLM if you need concurrent serving

Other Computers

Other Models on RTX 4090 Desktop (24 GB VRAM, 64 GB RAM)

Llama 3.2 Family on GPUs

What This Model Is Good At

Model & Tools

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