I had to distribute some applications via GPOs depending to the underlying OS architecture.

 

Here´s how I solved this problem.

I´ve created 2 WMI Filter Objects inside the Group Policy Managament Console and associated them with the GPOs I´ve already created

x86:

SELECT AddressWidth FROM Win32_Processor WHERE AddressWidth =’32’

x64:

SELECT AddressWidth FROM Win32_Processor WHERE AddressWidth =’64’