

Office 2013 offers enhanced default security protections through Hardware Data Execution Prevention (DEP).In-house Office solution developers should have access to the 64-bit Office 2013 for testing and updating these solutions.Users who use Project 2013 also benefit when they use Project files over 2 GB, especially when they are dealing with many subprojects to a large project.(Worksheets smaller than 2 GB on disk might still contain enough data to occupy 2 GB or more of addressable memory.) You can learn more in Excel specifications and limits and Data Model specifications and limits. On the other hand, 32-bit Office is limited to 2 gigabytes (GB) of virtual address space, shared by Excel, the workbook, and add-ins that run in the same process. Instead, workbook size is limited only by available memory and system resources. This is because 64-bit Office doesn’t impose hard limits on file size. Excel expert users who work with complex Excel worksheets can benefit from using 64-bit Office 2013.There are several cases in which you should consider deploying 64-bit Office 2013.
