When you choose a product suite or individual program to deploy, evaluate the computers before you deploy any software to make sure that they meet the minimum operating system requirements. The information that follows this table outlines any additional requirements for specific components of Office 2013 Preview, including add-ons and tools. Refer to the following table for a snapshot of the overall system requirements for Office 2013 Preview. Office 2013 Preview applications – specific requirements
Office 2013 Preview for Personal Computers–standard system requirements We recommend that you install Silverlight together with Office 2013 Preview to improve the online experience. Office 2013 Preview is supported for both 32-bit and 64-bit client applications. This article will help you determine whether you do have to do that. “You may have to upgrade your hardware or operating system, or both, before you can use Office 2013 Preview.
Microsoft has detailed the system requirements for the new Microsoft Office 2013 suite: