what is the difference between x64 and win32?
In simple terms, Windows64 bit can handle much larger memory space (RAM) than windows32 bit. Win32 can work with a max of 4GB or RAM whereas a win64 bit can handle way much more. ... These are both just called the “Windows API” these days. In Win64, the size of the pointers is 64 bits; and in Win32, it is 32 bits.