Qwen3 1.7B

At the default Q8_0, 139 of 140 phones have enough estimated usable memory; 139 also reach 3+ tokens/s. On Mac, 54 of 54 exact configurations pass using that quant or a smaller tracked fallback.

Params
1.7B
Family
qwen
Released
2025-04
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
Q8_01.8 GB~2.6 GB139 memory-fit · 139 usable

Qwen3 1.7B at Q8_0 on 140 phones

This table is fixed to the recommended Q8_0, 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

Qwen3 1.7B on 54 Mac configurations

Each Mac uses the recommended Q8_0 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 Qwen3 1.7B on a phone?

At Q8_0, Qwen3 1.7B needs ~2.6GB 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 Qwen3 1.7B run on a flagship phone?

On the Galaxy S25 Ultra (Snapdragon 8 Elite) it runs at ~19.2 tokens/s at Q8_0, estimated from memory bandwidth. Anything above ~8 tokens/s feels smooth for chat.

Can an iPhone run Qwen3 1.7B?

Yes — the iPhone 16 Pro Max runs it at ~15 tokens/s at Q8_0, using 2.6GB of its ~5.2GB usable memory.

What is the best quantization of Qwen3 1.7B for mobile?

Q8_0 (1.8GB download) is the size/quality sweet spot. Total memory needed is ~2.6GB once the KV cache and runtime are counted — the download size alone understates it.

How many phones can run Qwen3 1.7B?

139 of the 140 phones we track have enough estimated usable memory at Q8_0; 139 also reach our usable-speed threshold of 3 tokens/s, and 106 run smoothly. Memory-fit alone does not mean a good experience.

Which Macs can run Qwen3 1.7B?

54 of the 54 exact Mac configurations we track have enough estimated working memory. Each Mac uses the recommended Q8_0 when it fits, or the largest smaller tracked quant that fits, and separates installed unified memory, the macOS reserve, and estimated speed.

What is Qwen3 1.7B good for on a phone?

It's tagged for chat. At 1.7B parameters, it's a fast, lightweight pick for quick tasks.

Guides for Qwen3

Bonsai 27B vs Qwen3.6 27B on Phones: Is 1-Bit Worth It?

Similar models

Qwen3 0.6BQwen3 4BQwen3 8BQwen3 14BQwen3 30B A3B