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Gemma 3 1B Instruct

Gemma 3 1B Instruct needs roughly 1.1 GB VRAM at Q4_K_M quantization (2.6 GB at FP16). 103 GPUs we track can run it fully in VRAM at 8k context.

103 GPUs run this natively · 1 with CPU offload

Google1B params32k contextGemmaCommercial use ok

Gemma 3 1B Instruct is a 1B parameter dense model developed by Google. March 2025 release, the smallest model in the Gemma 3 family. Unlike the 4B/12B/27B siblings, the 1B checkpoint is text-only — no SigLIP vision encoder — and caps out at 32K context rather than 128K.

To run Gemma 3 1B Instruct locally: Q8_0 needs roughly 1GB — runs on any GPU, most phones, and even Raspberry Pi-class hardware without issue.

MMLU-Pro 14.7 is modest, as expected at 1B scale, but the tradeoff buys very low latency for simple classification, autocomplete, and on-device assistant tasks.

VRAM at each quantization

Calculated at 8k context. Since KV cache scales linearly with context, longer sessions need more VRAM than shown here.

QuantWeightsKV cacheTotal
FP324.0 GB0.33 GB4.8 GB
BF162.0 GB0.33 GB2.6 GB
FP162.0 GB0.33 GB2.6 GB
Q8_0rec1.1 GB0.33 GB1.6 GB
Q6_K0.8 GB0.33 GB1.3 GB
Q5_K_M0.7 GB0.33 GB1.2 GB
Q4_K_M0.6 GB0.33 GB1.1 GB
Q3_K_M0.5 GB0.33 GB0.9 GB
Q2_K0.4 GB0.33 GB0.8 GB
NVFP4cuda0.5 GB0.33 GB0.9 GB

Shown at 8k context with FP16 KV cache. NVFP4 needs a CUDA GPU to run. Toggle TurboQuant in the calculator to view compressed KV cache numbers.

Benchmarks

MMLU-Pro
14.7

GPUs that run Gemma 3 1B Instruct natively (103)

Plus 1 GPUs that run it with CPU offload (slower)

Notes

Text-only; larger siblings support vision.

Hugging Face ↗Ollama ↗Released 2025-03-12

Compare Gemma 3 1B Instruct with other models

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Frequently asked questions

What are the VRAM requirements for Gemma 3 1B Instruct?
Gemma 3 1B Instruct requires approximately 1.0 GB of VRAM at Q4_K_M quantization, 1.6 GB at Q8, and 2.6 GB at FP16. These numbers assume 8k context window; VRAM scales linearly with context length due to the KV cache.
How many parameters does Gemma 3 1B Instruct have?
Gemma 3 1B Instruct has 1 billion parameters.
How capable is Gemma 3 1B Instruct?
Gemma 3 1B Instruct has an MMLU-Pro score of 14.7, making it well-suited for lightweight tasks, prototyping, and resource-constrained environments.
Can Gemma 3 1B Instruct run on a 16 GB GPU?
Yes. Gemma 3 1B Instruct needs 1.0 GB at Q4_K_M, which fits in a 16 GB GPU like the RTX 4080 or RTX 4070 Ti Super.
What is the smallest quantization for Gemma 3 1B Instruct that fits in 24 GB of VRAM?
At FP32, Gemma 3 1B Instruct needs 4.8 GB — the highest-quality quantization that fits in 24 GB of VRAM.
What GPU do I need to run Gemma 3 1B Instruct locally?
A 16 GB GPU is enough. At Q4_K_M, Gemma 3 1B Instruct needs 1.0 GB VRAM. Good options: RTX 4080 (16 GB), RTX 4070 Ti Super (16 GB).