Head-to-head · Qwen3
Qwen3 0.6B vs Qwen3 1.7B
Qwen3 0.6B needs ~1.5 GB at Q4_K_M; Qwen3 1.7B needs ~2.4 GB. That ~0.9 GB gap decides which hardware runs each; they differ on 0 of the 14 devices below.
Which devices run each
A representative spread across the memory range. Tap a verdict for the full breakdown.
Size at each quantization
* derived from bits-per-weight; unstarred sizes are measured GGUF files.
Bottom line
The larger Qwen3 1.7B needs ~2.4 GB; Qwen3 0.6B runs on lighter hardware at ~1.5 GB with more headroom and faster responses. Check each against your exact device: what runs Qwen3 0.6B · what runs Qwen3 1.7B.
More Qwen3 comparisons
FAQ
What is the difference in memory between Qwen3 0.6B and Qwen3 1.7B?
At Q4_K_M, Qwen3 0.6B needs about 1.5 GB and Qwen3 1.7B needs about 2.4 GB, a difference of ~0.9 GB.
Should I run Qwen3 0.6B or Qwen3 1.7B?
Run Qwen3 1.7B if your hardware has the ~2.4 GB it needs and you want maximum quality; run Qwen3 0.6B (~1.5 GB) for lighter hardware, faster responses, and more memory headroom.
Full breakdowns: Qwen3 0.6B · Qwen3 1.7B · all models × devices.
Sources
Memory figures are estimates at Q4_K_M, validated 2026-08-03. See methodology.