Llama 3.3 70B
70B parameter open-weight model. December 2024 Llama release with improved instruction following over 3.1 70B at the same 70B parameter count and 128K context. Q4 requires ~41 GB VRAM — suited for RTX 6000 Ada (48 GB), multi-GPU setups, or Mac with 64 GB+ unified memory.
Meta · Llama 3
Model overview
Llama 3.3 70B is Meta's refreshed 70B release, improving instruction-following over the earlier Llama 3.1 70B checkpoint while keeping the same parameter count and 128K context window. It covers a broad set of workflows well — chat, coding, RAG, agentic tool-use, and summarization all appear as tagged strengths — making it a versatile pick if you have the hardware to run a 70B-class model. Q4 quantization needs roughly 41 GB of VRAM, which fits a single 48 GB workstation card like the RTX 6000 Ada, a multi-GPU rig, or a Mac with 64 GB or more of unified memory. For most single consumer-GPU setups, a smaller Llama or Qwen checkpoint will be more practical.
Editorial review
VRAM figures are empirical estimates. Actual usage varies by runtime, context length, and system configuration. Verify on your specific hardware before production use.
Will Llama 3.3 70B run on your machine?
Llama 3.3 70B is 70B parameters and needs 42.5 GB of VRAM at Q4_K_M — 41 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_M | 41 GB | 42.5 GB | good |
| Q8_0 | 72 GB | 73.5 GB | high |
| FP16 | 142 GB | 143.5 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.
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