mingw w64 download address, download the official look too faint. Direct write down the download link.
https://sourceforge.net/projects/mingw-w64/
Pure i686 32-bit 32-bit version for win system. x86_64 is the 64-bit version of the system used, and now we generally use a 64-bit system, so we can download in a four x86_64 selected. End seh is a pure 64-bit compiler. Sjlj end 3264 is two compilers, or the need to add -m32 -m64 parameters. posix commonly used for cross-platform, better than some of the win32 compatibility.
Screenshot of mind
