NOTE: The codeblocks-13.12mingw-setup.exe file includes the GCC compiler and GDB debugger from TDM-GCC (version 4.7.1, 32 bit). The codeblocks-13.12mingw-setup-TDM-GCC-481.exe file includes the TDM-GCC compiler, version 4.8.1, 32 bit. While v4.7.1 is rock-solid (we use it to compile C::B), v4.8.1 is provided for convenience, there are some known bugs with this version related to the compilation of Code::Blocks itself.
IF UNSURE, USE "codeblocks-13.12mingw-setup.exe"!
BY the way saying you need a "fast answer" doesn't often help but turns people away.