intel core 2 duo

[Nigel Wade]

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