ComfyUI Portable slashes RAM usage vs Desktop in side-by-side video generation test
phalanx2357 · reddit · 2026-10-19
A user running video generation (MiniMax H3) on an RTX 5090 with 32GB RAM compared ComfyUI Desktop vs Portable: Desktop regularly maxed out system RAM, making the machine unusable for anything else, while Portable with identical models and workflows sat at 45% RAM usage with the same 31GB VRAM draw and identical generation speed — normal multitasking fully restored.
The author expected Portable to be harder to set up but found migration trivial, calling the difference night and day and asking whether this is a common Desktop issue.
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