Windows 7 IE9 64 bit
Windows 7 IE9 32 bit
Windows 8 IE10 64 bit
Windows 8 IE10 32 bit
This is what the OP is talking about.
Looking at the above pictures, the first two come from Windows 7. You can tell the difference between the two versions (32 bit and 64 bit) as the one for 64 bit clearly says "64 bit edition" in the about box. For the 32 bit version of IE9, it does not say anything. So, we can assume that its the 32 bit version.
However, in Windows 8, it does not matter if you run iexplore.exe from "C:\Program Files (x86)\Internet Explorer" (the 32 bit version) or "C:\Program Files\Internet Explorer" (the 64 bit version), as the about boxes look exactly the same. The one launched from "C:\Program Files\Internet Explorer" does not indicate that it is the 64 bit version of IE 10, like IE 9 did under Windows 7.
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