intel core 2 duo
Nigel Wade
nmw at ion.le.ac.uk
Mon Oct 9 08:43:02 UTC 2006
Phil Meyer wrote:
> Louis Garcia wrote:
>> Just got my hands on a laptop with this chip. Any difference installing
>> i386 or x86_64 version of fedora? I've heard fedora had a problem with
>> this new chip?
>>
>> -Louis
>>
>>
> There is NO advantage installing a 64 bit OS on a 32 bit CPU that has
> extended features to EMULATE AMD 64 bit instructions. Other than memory
> address space and a few other things that will never be warranted on
> today's laptops.
>
> Stick with 32 bit Fedora on all intel CPU platforms except itanic. You
> will be fine.
>
> Having said that, I would also propound that the opposite is true for
> AMD 64 bit CPU platforms. You can lose up to 15 percent (from my own
> personal tests) performance by running a 32 bit made for intel
> instruction set on AMD CPUs, because it has to EMULATE 32 bit instructions.
Could you please provide some documentary evidence for your assertion that AMD64
processors EMULATE [your emphasis, not mine] 32 bit instructions?
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw at ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
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