The system requirements for the portable AutoCAD Civil 3D software are:
Official "portable" versions (as standalone .exe files that run from a USB) do not exist for Civil 3D due to the software's massive system requirements , including its need for dedicated VRAM and high-frequency processors. Official Alternatives for Portability software portable autocad civil 3d
For civil engineers on the move, a portable version of AutoCAD Civil 3D offers several theoretical advantages: The system requirements for the portable AutoCAD Civil
: