LLM VRAM requirements by model
How much GPU memory 31 popular open models need, computed from each one's own architecture: weights, KV cache and overhead at BF16 and INT4 for one user at 8k context. Each page breaks it down by precision and context, lists the GPUs that hold it and how many users fit, and adds fine-tuning memory.
| Model | Parameters | BF16 · 8k | INT4 · 8k | Max context |
|---|---|---|---|---|
| DeepSeek V3 | 684.53B37.00B active | 1279.1 GiB | 345.2 GiB | 160k |
| Gemma 3 1B IT | 999.9M | 3.27 GiB | 2.31 GiB | 32k |
| Gemma 3 4B IT | 4.30B | 10.57 GiB | 5.61 GiB | 128k |
| Gemma 2 9B IT | 9.24B | 22.48 GiB | 11.09 GiB | 8k |
| Gemma 3 12B IT | 12.19B | 26.85 GiB | 11.55 GiB | 128k |
| Gemma 2 27B IT | 27.20B | 56.79 GiB | 21.19 GiB | 8k |
| Gemma 3 27B IT | 27.43B | 56.53 GiB | 20.93 GiB | 128k |
| Llama 3.2 1B Instruct | 1.24B | 3.63 GiB | 2.29 GiB | 128k |
| Llama 3.2 3B Instruct | 3.21B | 8.28 GiB | 4.42 GiB | 128k |
| Llama 3.1 8B Instruct | 8.03B | 17.71 GiB | 8.16 GiB | 128k |
| Llama 3.3 70B Instruct | 70.55B | 137.6 GiB | 44.01 GiB | 128k |
| Llama 3.1 70B Instruct | 70.55B | 137.6 GiB | 44.01 GiB | 128k |
| Llama 4 Scout 17B-16E Instruct | 108.64B17.00B active | 205.4 GiB | 59.64 GiB | 10M |
| Llama 3.1 405B Instruct | 405.85B | 768.3 GiB | 218.9 GiB | 128k |
| Mistral 7B Instruct v0.3 | 7.25B | 15.43 GiB | 5.88 GiB | 32k |
| Mistral Nemo 12B Instruct | 12.25B | 26.23 GiB | 11.31 GiB | 128k |
| Mixtral 8x7B Instruct | 46.70B12.90B active | 89.46 GiB | 25.94 GiB | 32k |
| Mixtral 8x22B Instruct | 140.60B39.00B active | 265.6 GiB | 73.87 GiB | 64k |
| gpt-oss 20B | 20.91B3.60B active | 41.22 GiB | 15.08 GiB | 128k |
| gpt-oss 120B | 116.83B5.10B active | 220.1 GiB | 63.24 GiB | 128k |
| Phi-3 mini 4k | 3.82B | 9.42 GiB | 4.46 GiB | 4k |
| Qwen2.5 0.5B Instruct | 494.0M | 1.85 GiB | 1.36 GiB | 32k |
| Qwen2.5 Coder 7B | 7.62B | 16.37 GiB | 7.45 GiB | 32k |
| Qwen2.5 7B Instruct | 7.62B | 16.37 GiB | 7.45 GiB | 32k |
| Qwen3 8B | 8.19B | 18.37 GiB | 8.87 GiB | 40k |
| Qwen2.5 14B Instruct | 14.77B | 31.48 GiB | 13.40 GiB | 32k |
| Qwen3 30B A3B | 30.53B3.30B active | 59.07 GiB | 18.15 GiB | 40k |
| Qwen3 Coder 30B A3B | 30.53B3.30B active | 59.07 GiB | 18.15 GiB | 256k |
| Qwen2.5 32B Instruct | 32.76B | 65.64 GiB | 22.96 GiB | 32k |
| Qwen3 32B | 32.76B | 65.64 GiB | 22.96 GiB | 40k |
| Qwen2.5 72B Instruct | 72.70B | 142.0 GiB | 45.99 GiB | 32k |
One user, FP16 KV cache and vLLM's overhead on one GPU; models with a shorter maximum context are shown at that maximum.