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Can I run Llama 3.3 70B on 8GB RAM Laptop (CPU/iGPU only)?

Compatibility verdict VRAM threshold engine
No, not enough memory would not load

No. Llama 3.3 70B needs ~45.3 GB even at Q4_K_M, but 8GB RAM Laptop (CPU/iGPU only) only has ~5 GB usable.

Needs ~45.3 GB Device usable ~5 GB

Needs ~45.3 GB even at Q4_K_M, but only ~5 GB is usable.

That figure is at a 4k context and moves about ±15% as context length changes.

The gap is about 40.3 GB: Llama 3.3 70B needs roughly 45.3 GB at Q4_K_M and 8GB RAM Laptop (CPU/iGPU only) leaves only about 5 GB usable for a model. The lightest tracked hardware that runs Llama 3.3 70B is the Apple M4 Max (64GB) at 64 GB. See Llama 3.3 70B on Apple M4 Max (64GB).

Q4_K_M needed
~45.3 GB
Usable on device
~5 GB
Device memory
8 GB
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Which quant fits

Quant ladder vs ~5 GB usable
Q2_K
~32.1 GB
Q3_K_M
~37 GB
Q4_K_M
~45.3 GB
Q5_K_M
~52.7 GB
Q6_K
~60.2 GB
Q8_0
~77.8 GB
FP16
~142.8 GB
The line marks 8GB RAM Laptop (CPU/iGPU only)'s ~5 GB budget; rungs past it are too large.
Model Llama
Parameters
70B
Q4_K_M size
42.52 GB
Q8_0 size
74.98 GB
Context
128k
Ollama tag
llama3.3:70b
Full Llama 3.3 70B requirements →
Device Windows
Memory
8 GB ram
Usable for weights
~5 GB
Power draw
~15 W
Best runtime
Ollama (llama.cpp backend)
Best models for 8GB RAM Laptop (CPU/iGPU only) →

What you can run instead

Run Llama 3.3 70B on other hardware

Apple M4 Max (64GB)Apple M4 Max (128GB)AMD Ryzen AI Halo (128GB)Apple M5 Max (128GB)Apple M3 Ultra (256GB)

FAQ

Can 8GB RAM Laptop (CPU/iGPU only) run Llama 3.3 70B?

No. Llama 3.3 70B needs ~45.3 GB even at Q4_K_M, but 8GB RAM Laptop (CPU/iGPU only) only has ~5 GB usable.

How much memory does Llama 3.3 70B need?

8GB RAM Laptop (CPU/iGPU only) does not have enough memory. At Q4_K_M the weights are ~42.52 GB; with KV cache and runtime overhead, budget ~45.3 GB at a 4k context.

What is the best tool to run Llama 3.3 70B on Windows?

LM Studio for a simple setup; Ollama (CUDA) for the most speed. AMD GPUs run via Vulkan/ROCm at roughly half CUDA throughput. NVIDIA is the smooth path on Windows.

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Sources

Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.