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Llama 3 70B
Meta open-weight model family still commonly used as a baseline for local AI stacks and app prototypes.
Meta · Llama
Editorial review
Model checkpoints, context windows, provider support, local runtime compatibility, and license terms can change quickly. Verify the exact model card before production or commercial use.
Best for
Builders who want a widely supported open-weight chat model with broad runtime compatibility.
Who should use it
- Builders who want a widely supported open-weight chat model with broad runtime compatibility.
- Builders who want local or self-hosted testing options.
Common workflows
- General chat, instruction following, local app prototypes
- chat workflows
- local workflows
- baseline workflows
Deployment and hardware notes
Quantized 70B-class models usually need high-memory GPUs or unified memory systems.
License and usage notes
Llama 3 Community License. Open weights. Verify the exact model card and license terms for the checkpoint or hosted provider you use.
Strengths
- Open weights model option for Llama workflows.
- Builders who want a widely supported open-weight chat model with broad runtime compatibility.
- Commonly used in local workflows through quantized builds, but 70B-class models are best with high-memory GPUs or workstation/server hardware.
- Tracked as Legacy baseline in the OpenSourcesAI model directory.
Limitations
- License is not a standard open-source license; newer models may outperform it for coding and reasoning.
- Quantized 70B-class models usually need high-memory GPUs or unified memory systems.
- Context window and limits: 8,192 tokens, confirmed from the model's published config.
- Verify the exact model card, provider docs, license, and serving support before production use.
Local workflow notes
Commonly used in local workflows through quantized builds, but 70B-class models are best with high-memory GPUs or workstation/server hardware.
Local runtimes: Ollama, LM Studio, llama.cpp, vLLM
Platforms: Windows, macOS, Linux, Workstations
Will Llama 3 70B run on your machine?
Llama 3 70B is 70B parameters and needs 43 GB of VRAM at Q4_K_M — 41.5 GB of weights plus 1.5 GB of runtime overhead for the inference server itself.
VRAM by quantization
| Quantization | Weights | Needs (with overhead) | Quality |
|---|---|---|---|
| Q4_K_S | 39 GB | 40.5 GB | good |
| Q4_K_M | 41.5 GB | 43 GB | good |
| Q8_0 | 74 GB | 75.5 GB | high |
| FP16 | 140 GB | 141.5 GB | reference |
Fit on common hardware at Q4_K_M
| Hardware | Memory the model can use | System RAM | Verdict |
|---|---|---|---|
| CPU Only | None (CPU only) | 16 GB | Too large |
| RTX 4060 Laptop | 8 GB | 16 GB | Too large |
| RTX 3060 (12GB) | 12 GB | 32 GB | Too large |
| RTX 4060 Ti (16GB) | 16 GB | 32 GB | Too large |
| RTX 3090 | 24 GB | 64 GB | Too large |
| Apple Silicon (Unified Memory) 36 GB | 27 GB of 36 GB | 36 GB | Too large |
| RTX 5090 | 32 GB | 64 GB | Too large |
| Apple Silicon (Unified Memory) 48 GB | 36 GB of 48 GB | 48 GB | Too large |
| Apple Silicon (Unified Memory) 64 GB | 48 GB of 64 GB | 64 GB | Comfortable |
| Apple Silicon (Unified Memory) 96 GB | 72 GB of 96 GB | 96 GB | Comfortable |
| Apple Silicon (Unified Memory) 128 GB | 96 GB of 128 GB | 128 GB | Comfortable |
Comfortable means VRAM clears the requirement by 2 GB or more. Tight means it covers the requirement with no margin. CPU offload means the model does not fit in VRAM but system RAM is at least 1.6× the weights, so it will run at reduced speed — expect roughly 1–5 tokens per second. Figures are weights plus a fixed runtime overhead and exclude KV-cache growth, which scales with context length.
Apple Silicon shares one pool of memory between the system and the GPU, so a model cannot use all of it. These rows apply the same 75% usable fraction the Compatibility Checker uses, which is why a 36 GB Mac is graded on less than 36 GB.
Need more hardware for Llama 3 70B? Open the PC Builder for the 70B tier →
VRAM fit by quantization level
Enter your GPU VRAM below to see which quantization of Llama 3 70B fits and get the Ollama run command.
Sources to verify
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