Running Wan2.1 14B FP16 on a 12GB laptop GPU: VRAM swap stress test finishes in 4m11s
RYuu-1120 · reddit · 2026-10-16
Reddit user RYuu-1120 stress-tested Wan2.1 14B Image-to-Video at FP16 on an RTX 5070 Ti laptop with only 12GB VRAM, relying on system RAM swapping.
- Setup: Acer Helios 16, Ultra 9 275HX, RTX 5070 Ti 12GB, 32GB DDR5-6400.
- Method: stock StabilityMatrix Image-to-Video template, zero optimizations, to see how gracefully Windows handles the massive VRAM/RAM deficit.
- Result: render completed in 4 minutes 11 seconds, with RAM pinned at 95% and dedicated VRAM at 100%.
- Video proof provided in two clips.
Takeaway: an unoptimized 14B video model can run on low-VRAM consumer hardware via memory swapping, albeit slowly — useful reference for laptop-based video generation.
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