Gemma 3 4B Instruct — VRAM Requirements
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 21 lipca 2026
How much GPU VRAM you need to run Gemma 3 Gemma 3 4B Instruct by Google locally, a 4B-parameter model. Figures are quantized weights + KV cache + framework overhead from a memory-bandwidth roofline model.
Gemma 3 4B Instruct needs about 4 GB VRAM at Q4_K_M.
VRAM by Quantization
| Quant | Bits/weight | Weights | Total VRAM |
|---|---|---|---|
| Q2_K | 2.63 | 1.3 GB | 3.3 GB |
| Q3_K_M | 3.41 | 1.7 GB | 3.6 GB |
| Q4_K_M | 4.83 | 2.4 GB | 4.4 GB |
| Q5_K_M | 5.67 | 2.8 GB | 4.8 GB |
| Q6_K | 6.56 | 3.3 GB | 5.2 GB |
| Q8_0 | 8.50 | 4.3 GB | 6.2 GB |
| F16 | 16.00 | 8.0 GB | 9.9 GB |
Switch quantization in the interactive calculator, or see the full Gemma 3 model page.
Add this badge to your model card
Model creators: paste this into your Hugging Face model card README to link readers straight to this VRAM breakdown.
[](https://llmconfigurator.com/en/vram-calculator/gemma-3-4b)Estimates only — actual VRAM varies with context length, batch size, runtime and KV-cache settings.