: As indicated by the "64Bit" in your query, AutoCAD 2018 was a major step in the transition away from 32-bit systems. For instance, the "LT" (Light) version of 2018 completely dropped support for Windows 10 32-bit operating systems. Installation Requirements : To run this version smoothly, it requires approximately 4.0 GB of disk space
Windows 7 SP1, Windows 8.1, or Windows 10 (64-bit only). Memory: Minimum 4 GB (8 GB recommended).
AutoCAD 2018 introduced smoother orbiting and zooming for 3D models. The 64-bit version handles complex 3D solids used in mechanical engineering (like automotive design in Turin's car industry) with ease.