[Beowulf] Recent comparisons of 1600 MHz external Harpertown vs.235x AMD processors?

Jan Heichler jan.heichler at gmx.net
Wed May 7 21:03:43 PDT 2008

Hallo Tom,

Mittwoch, 7. Mai 2008, meintest Du:

>> Has there been a recent (i.e., conducted this year with 
>> shipping silicon) performance study/benchmark of the 
>> "Harpertwon" family of Intel Xeon processors running with an 
>> external clock of 1600 MHz against a suitable high-end member 
>> of the AMD "Barcelona" family, e.g., 2354 or 2356?

TE> Not a study, but recent published comparisons on an OpenMP application
TE> benchmark suite, SPEC OMP2001 are available:

TE> AMD Barcelona,  Opteron 2356, dual-socket, 2.3 GHz:
TE> http://www.spec.org/omp/results/res2008q2/omp2001-20080325-00291.html 
TE> SPECompMbase2001 = 17598

TE> Intel Harpertown, Intel Xeon E5440, dual-socket, 2.83 GHz:
TE> http://www.spec.org/omp/results/res2008q2/omp2001-20080325-00292.html
TE> SPECompMbase2001 = 14789

TE> Both these results were run by AMD, but they used an Intel-produced
TE> config file on the Intel-CPU-system runs.
TE> Note that AMD did not use the fastest Harpertown CPUs available, but
TE> they are pretty decent speed -- I seem to recall that AMD had a
TE> rationale of choosing similarly power-consuming CPUs, but I could be
TE> wrong there.  

But the Harpertown that the benchmark ran on was not one with FSB1600. And this is/could be a real difference here since it affects the memory performance.

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