64-bit CPU

[Andrej Marjan]

Lennart Sorensen wrote:

>Of course
>memory wise most applications don't need to be 64bit, while some do gain
>in speed by running 64bit (apparently from what I have read, up to 50%
>speed gain on the athlon 64 in some cases when running 64bit mode.  I
>guess some code really likes being run in 64bit mode.)
>  
>
x86-64 has many more registers, hence the performance improvement for 
programs that don't need the extra addess space or 64 bit integer 
computations.
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