In the installer I use the `(32-bit)`/`(64-bit)` convention, so using the same convention here would make sense.

Sure, we could use x86/x64 but then everything would need to be changed, and I don't see much advantage. People that compile and run Bitcoin on 'other' architectures know what they're doing and don't need to be reminded in the About: dialog.

If this is really a point of contention and people are really opposed to x86-only 'features' outside of Windows we can make it `#ifdef WIN32`. End of bike-shedding :)