Autodesk AutoCAD 2011 (64-bit) Released on (codename "Hammer"), AutoCAD 2011 represented the 25th release of the software. The 64-bit version was a major focus for users requiring larger memory addressing for complex 3D modeling and large datasets, offering a significant performance leap over the 32-bit counterpart. Core Features and Enhancements
enabled users to view, edit, and share DWG files via web browsers and mobile devices. ACM Digital Library System Requirements (64-bit) Autodesk AutoCAD 2011 -64-bit-