If you need flexibility without a full workstation install, consider these official options: AutoCAD System Requirements - Design Master Software
Instead of hunting for a "portable" download, here is the safe and correct approach: Descargar Autocad Portable Para Windows 7 64 Bits
Pero esta ligereza tiene un precio: funciones rotas, falta de actualizaciones y alto riesgo de malware. If you need flexibility without a full workstation
Searching for a "portable" version of AutoCAD for Windows 7 (64-bit) typically leads to unofficial or modified software, as that runs without installation. While many third-party sites offer such downloads, using them presents significant security and legal risks. Official Compatibility for Windows 7 Descargar Autocad Portable Para Windows 7 64 Bits