Board Thread:LotR Mod Technical Support/@comment-75.105.188.235-20170525061632/@comment-25330335-20170528032403

Huh. For future reference, x86 is the intel instruction set for 32-bit chips. When 64-bit chips became necessary (because of larger memory addresses), intel tried to write a whole new instruction set (which would have been more efficient), but AMD modified the x86 set. As the market played out, everyone used x86_64 instead of intel's new instruction set, and viola, now we have confusing instruction set names...

x86_64 is also sometimes known as AMD_64, because AMD invented it.