

Similarly, when you are working with large Word documents or PowerPoint presentations that are very rich with multimedia (pictures, videos, complex animations, etc…) or large tables or other embedded objects, the 64-bit version can be of help. Using the 64-bit version of Office will for instance allow you to work with large data sets like Excel workbooks or Project files that are over 2GB in size.

With the 32-bit version of Office, the application can only use up to 2GB of memory, even when more is available in your computer. In general, the main benefit of using the 64-bit version of Office, is that it can use access memory when needed. I would recommend going with 64bit and reasons behind that as below:
