DeepSeek V3 (685B MoE) — VRAM Requirements
Written by Jakub Rusinowski · Last updated July 21, 2026
How much GPU VRAM you need to run DeepSeek V3 DeepSeek V3 (685B MoE) by DeepSeek locally, a 685B-parameter model. Figures are quantized weights + KV cache + framework overhead from a memory-bandwidth roofline model.
DeepSeek V3 (685B MoE) needs about 414 GB VRAM at Q4_K_M.
VRAM by Quantization
| Quant | Bits/weight | Weights | Total VRAM |
|---|---|---|---|
| Q2_K | 2.63 | 225.2 GB | 226.0 GB |
| Q3_K_M | 3.41 | 292.0 GB | 292.8 GB |
| Q4_K_M | 4.83 | 413.6 GB | 414.4 GB |
| Q5_K_M | 5.67 | 485.5 GB | 486.3 GB |
| Q6_K | 6.56 | 561.7 GB | 562.5 GB |
| Q8_0 | 8.50 | 727.8 GB | 728.6 GB |
| F16 | 16.00 | 1370.0 GB | 1370.8 GB |
Switch quantization in the interactive calculator, or see the full DeepSeek V3 model page.
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[](https://llmconfigurator.com/en/vram-calculator/deepseek-v3-685b)Estimates only — actual VRAM varies with context length, batch size, runtime and KV-cache settings.