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<p>Hallo Tom,</p>
<p><br></p>
<p>Mittwoch, 7. Mai 2008, meintest Du:</p>
<p><br></p>
<p><span class=rvts6>>> Has there been a recent (i.e., conducted this year with </span></p>
<p><span class=rvts6>>> shipping silicon) performance study/benchmark of the </span></p>
<p><span class=rvts6>>> "Harpertwon" family of Intel Xeon processors running with an </span></p>
<p><span class=rvts6>>> external clock of 1600 MHz against a suitable high-end member </span></p>
<p><span class=rvts6>>> of the AMD "Barcelona" family, e.g., 2354 or 2356?</span></p>
<p><br></p>
<p><span class=rvts7>TE> Not a study, but recent published comparisons on an OpenMP application</span></p>
<p><span class=rvts7>TE> benchmark suite, SPEC OMP2001 are available:</span></p>
<p><br></p>
<p><span class=rvts7>TE> AMD Barcelona, Opteron 2356, dual-socket, 2.3 GHz:</span></p>
<p><a class=rvts8 href="http://www.spec.org/omp/results/res2008q2/omp2001-20080325-00291.html">TE> http://www.spec.org/omp/results/res2008q2/omp2001-20080325-00291.html</a><span class=rvts9> </span></p>
<p><span class=rvts7>TE> SPECompMbase2001 = 17598</span></p>
<p><br></p>
<p><span class=rvts7>TE> Intel Harpertown, Intel Xeon E5440, dual-socket, 2.83 GHz:</span></p>
<p><a class=rvts8 href="http://www.spec.org/omp/results/res2008q2/omp2001-20080325-00292.html">TE> http://www.spec.org/omp/results/res2008q2/omp2001-20080325-00292.html</a></p>
<p><span class=rvts7>TE> SPECompMbase2001 = 14789</span></p>
<p><br></p>
<p><span class=rvts7>TE> Both these results were run by AMD, but they used an Intel-produced</span></p>
<p><span class=rvts7>TE> config file on the Intel-CPU-system runs.</span></p>
<p><span class=rvts7>TE> Note that AMD did not use the fastest Harpertown CPUs available, but</span></p>
<p><span class=rvts7>TE> they are pretty decent speed -- I seem to recall that AMD had a</span></p>
<p><span class=rvts7>TE> rationale of choosing similarly power-consuming CPUs, but I could be</span></p>
<p><span class=rvts7>TE> wrong there. </span></p>
<p><span class=rvts7><br></span></p>
<p><br></p>
<p>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.</p>
<p><br></p>
<p>Cheers,</p>
<p>Jan</p>
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