X64 or X86. which is faster?

[Shonumi]

Are you talking about Dolphin, OSes, or what? In general, I think x64, if the programmers take advantage of the architecture. It's a noticeable difference for me here on Linux. I haven't messed with Windows, but I imagine the devs over at Redmond have made sure that the x64 version of 7 is optimized well enough. For Dolphin, definitely x64 in my experience.