The 32-bit architecture has a hard memory limit. If you try to open a large, complex drawing in a 32-bit portable version, the application will likely crash or freeze because it cannot address enough memory.
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LibreCAD is a completely free, open-source 2D CAD application. It has exceptionally low system requirements and runs natively on older hardware architectures without demanding heavy RAM or GPU performance. 2. nanoCAD (Budget-Friendly & Lightweight)
The demand for highlights a need for flexible, accessible design tools. While a portable 32-bit CAD app can act as a stopgap solution for, say, an urgent site visit on an old laptop, the security risks associated with unofficial "repacks" make them unsafe for professional environments.