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text model · llama · Windows

Can I run Llama 3.1 8B on Nvidia GeForce RTX 4070 (12GB)?

Compatibility verdict VRAM threshold engine
Yes, it runsGPU accelerated

Yes. Llama 3.1 8B runs on Nvidia GeForce RTX 4070 (12GB) at Q4_K_M (~6.4 GB of ~11 GB usable).

Needs ~6.4 GB Device usable ~11 GB

Runs at Q4_K_M using ~6.4 GB of ~11 GB usable. You have room for Q8_0 for higher quality.

Q4_K_M needed
~6.4 GB
Usable on device
~11 GB
Device memory
12 GB
Best quant
Q4_K_M

Run it

Install commands Windows

Pick your tool. All three load the same Q4_K_M weights.

Ollama
$ ollama run llama3.1:8b
llama.cpp
$ llama-cli -hf bartowski/Meta-Llama-3.1-8B-Instruct-GGUF:Q4_K_M
LM Studio
$ lms get bartowski/Meta-Llama-3.1-8B-Instruct-GGUF

AMD GPUs run via Vulkan/ROCm at roughly half CUDA throughput. NVIDIA is the smooth path on Windows.

Model llama
Parameters
8B
Q4_K_M size
4.92 GB
Q8_0 size
8.54 GB
Context
128k
Ollama tag
llama3.1:8b
Full Llama 3.1 8B requirements →
Device Windows
Memory
12 GB vram
Usable for weights
~11 GB
Best runtime
Ollama (CUDA) / vLLM (Linux)
Best models for Nvidia GeForce RTX 4070 (12GB) →

You could also run

Run Llama 3.1 8B on other hardware

FAQ

Can Nvidia GeForce RTX 4070 (12GB) run Llama 3.1 8B?

Yes. Llama 3.1 8B runs on Nvidia GeForce RTX 4070 (12GB) at Q4_K_M (~6.4 GB of ~11 GB usable).

How much memory does Llama 3.1 8B need?

Nvidia GeForce RTX 4070 (12GB) has room to spare. At Q4_K_M the weights are ~4.92 GB; with KV cache and runtime overhead, budget ~6.4 GB at a 4k context.

What is the best tool to run Llama 3.1 8B 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.

Sources

Memory figures are estimates. See methodology.