Thorsten Froehlich wrote:
> 
> In article <4082906d@news.povray.org> , Warp <war### [at] tagpovrayorg>  wrote:
> 
> >  AFAIK for some reason 32-bit
> > code does not run as fast as 64-bit code in this processor.
> 
> Well, the 64-bit extension is essentially a RISC design except for the
> instruction encoding.  And you get twice as many registers as in 32-bit
> mode.  Not really difficult to optimise for such a design, nor hard to
> implement an efficient core based on a clean RISC archicture ... in
> particular with just 16 registers.

This was the real advantage I was pleased to see in the 64-bit processors.
Being able to keep intermediate results in register makes for a massive
performance boost.

Now a processor that does 3d arithmetic directly would be very nice...

Regards,
John

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