Solidworks 2012 Portable [best] -

: A productivity tool that lets you "lock" features in the FeatureManager design tree, preventing them from rebuilding and significantly speeding up the performance of complex models. Common "Portable" Version Characteristics No Installation Required

If you are running the official SolidWorks 2012 version, ensure your system meets these original specifications for optimal performance: Minimum Requirement Recommended Windows 7 (32 or 64-bit) Windows 7 64-bit Processor Intel or AMD dual-core (64-bit capable) 3.3 GHz or higher RAM 4 GB to 8 GB+ Graphics Card Certified OpenGL card (NVIDIA Quadro / AMD FirePro) Certified card with updated drivers Storage 5 GB free disk space 10 GB free for installation Better Alternatives Solidworks 2012 Portable