Can a 32bit process access more memory on a 64bit windows OS?

Question

From what I understand, a 32bit process can only access 2GB of memory on 32bit windows without the /3GB switch, and that some of that memory is taken up by the OS for its ow

Answer 1

Your app will be limited by the pointer size, in your example 32 bits.

If your app was to access more memory then you would need some sort of segmented memory architecture like we had in the 16 bit days where apps used 16bit pointers and offsets to access the full 32bit memory space.