Office 2010 was released to manufacturing (RTM) recently and on Thursday the “bits” turned up on Technet and MSDN.

The above caught my attention “Important: Microsoft strongly recommends the use of 32-bit (x86) versions of Office 2010, Project 2010, and Visio 2010 applications as the default option for all platforms.”

Basically unless you deal with 2GB Spreadsheets you should steer clear of a x64 version of Office 2010.

The x86 version of Office2010 running on an x64 operating system like Windows 7 Professional x64 will be running in Windows-32-on-Windows-64 or WOW64 as Microsoft call it.

I have been beta testing Office 2010 x64 for many months now but I guess I’m going to follow Microsoft’s advice on this and deploy the RTM x86 version.

Further information on x86 and x64 considerations here: Link