Quote - > Quote - With Intel processors in 64 bit mode a 64 bit software runs faster than the same 32 bit software. With AMD processors it has no importance, 32 and 64 bit softwares run with the same speed.

Interesting, Kawecki,  as I'm contemplating building a new machine this Fall.  Is the difference because Intel does 64-bit better, or because AMD does 32-bit better?

Likely because of the cache-size; past AMD processors had much less cache than Intel processors and the less cache you had, the more any comparison you did between 32 and 64 became a comparison of RAM-speed (which is essentiallly the same for 32 and 64). But they did correct that some time ago, and if you wait until fall, you probably would not experience that effect (unless you buy a refurbished machine or so, that is).