How to determine OS Platform with WMI?

Question

I am trying to figure out if there is a location in WMI that will return the OS Architecture (i.e. 32-bit or 64-bit) that will work across \"all\" versions of Windows. I though

Answer 1

The simple WMI query that you used does indeed return a result for every physical CPU in the computer. It will only return one result if you have a single processor, multiple core CPU. We can safely assume the computer has atleast one CPU, so lets just use the information from CPU0.

To select only 64-bit operating systems...

select * from Win32_Processor where DeviceID="CPU0" and AddressWidth="64"

To select only 32-bit operating systems...

select * from Win32_Processor where DeviceID="CPU0" and AddressWidth="32"