The modern standard. It allows AutoCAD to use more than 4GB of RAM, which is necessary for complex 3D modeling and large architectural rendering.
AutoCAD 2018 was designed primarily to leverage modern 64-bit operating systems. A 64-bit architecture allows the software to utilize more than 4 GB of RAM. This capacity is essential when rendering complex 3D models, processing large cloud points, or working with massive datasets. Autocad 2018 X64 -32X64bit- -Product Key And Xforce