Gemma 3 1B

At the default Q4_K_M, 140 of 140 phones have enough estimated usable memory; 140 also reach 3+ tokens/s. On Mac, 54 of 54 exact configurations pass using that quant or a smaller tracked fallback.

Params
1B
Family
gemma
Released
2025-03
Tags
chat

Downloads & memory by quant

The download is only the weights — add KV cache and runtime to get what your phone actually needs. “Memory-fit” only means it can load; “usable” also requires an estimated 3+ tokens/s. Each row uses that row's quant. ★ = recommended.

QuantDownloadMemory neededPhone reality
IQ1_S0.6 GB~1.3 GB140 memory-fit · 140 usable
IQ4_XS0.7 GB~1.4 GB140 memory-fit · 140 usable
Q2_K0.7 GB~1.4 GB140 memory-fit · 140 usable
Q3_K_M0.7 GB~1.4 GB140 memory-fit · 140 usable
Q4_00.7 GB~1.4 GB140 memory-fit · 140 usable
Q4_K_M0.8 GB~1.5 GB140 memory-fit · 140 usable
Q4_K_S0.8 GB~1.5 GB140 memory-fit · 140 usable
Q5_K_M0.9 GB~1.6 GB140 memory-fit · 140 usable
Q6_K1 GB~1.7 GB140 memory-fit · 140 usable
Q8_01.1 GB~1.8 GB140 memory-fit · 140 usable

Gemma 3 1B at Q4_K_M on 140 phones

This table is fixed to the recommended Q4_K_M, on each phone's largest RAM option. Counts for smaller quants above will differ. All phones are shown, sorted by fit and estimated experience; tap one for the full report.

PhoneChip · RAMNeedsSpeedVerdict

~ = bandwidth-based estimate · ✓ = measured on real hardware

Gemma 3 1B on 54 Mac configurations

Each Mac uses the recommended Q4_K_M at 4K context when it fits, or the largest smaller tracked quant that fits. Each row links to the full report with a macOS-specific setup guide.

MacUnified memoryQuantWorking budgetNeedsEstimated speedVerdict

FAQ

How much RAM do I need to run Gemma 3 1B on a phone?

At Q4_K_M, Gemma 3 1B needs ~1.5GB of usable memory (weights + KV cache + runtime). In practice that means a 6GB+ Android phone or a 6GB+ iPhone — iOS lets a single app use less of its RAM than Android does.

How fast does Gemma 3 1B run on a flagship phone?

On the Galaxy S25 Ultra (Snapdragon 8 Elite) it runs at ~43.2 tokens/s at Q4_K_M, estimated from memory bandwidth. Anything above ~8 tokens/s feels smooth for chat.

Can an iPhone run Gemma 3 1B?

Yes — the iPhone 16 Pro Max runs it at ~33.8 tokens/s at Q4_K_M, using 1.5GB of its ~5.2GB usable memory.

What is the best quantization of Gemma 3 1B for mobile?

Q4_K_M (0.8GB download) is the size/quality sweet spot of the 10 quants available. Total memory needed is ~1.5GB once the KV cache and runtime are counted — the download size alone understates it.

How many phones can run Gemma 3 1B?

140 of the 140 phones we track have enough estimated usable memory at Q4_K_M; 140 also reach our usable-speed threshold of 3 tokens/s, and 139 run smoothly. Memory-fit alone does not mean a good experience.

Which Macs can run Gemma 3 1B?

54 of the 54 exact Mac configurations we track have enough estimated working memory. Each Mac uses the recommended Q4_K_M when it fits, or the largest smaller tracked quant that fits, and separates installed unified memory, the macOS reserve, and estimated speed.

What is Gemma 3 1B good for on a phone?

It's tagged for chat. At 1B parameters, it's a fast, lightweight pick for quick tasks.

Similar models

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