Author: Albert Bertilsson
Date: 12:43:08 07/31/03
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On July 31, 2003 at 05:22:05, Vincent Lejeune wrote: > >http://www.theinquirer.net/?article=10785 > >... >Single CPU+Hyperthreading P4c-2.6 800 Mhz FSB: >One job at a time 82.20 seconds >Two jobs at a time 138.21 seconds >Scaled 1.18 times. > >Dual p4-3.0/533 Mhz FSB (fastest dual p4 made) >One job at a time 84.98 seconds >Two jobs at a time 155.92 seconds >Scaled 1.09 times. > >Dual Opteron 240s (the slowest Opteron) >One job at a time 97.09 seconds >Two jobs at a time 98.77 >Scaled 1.96 times. > >He adds: "Basically the opteron scales amazingly well >... Seems like this test is more of a memory bandwidth test to me. The 800MHz bus is slightly faster than the 533MHz bus. Single opteron is slower than p4 with 533MHz bus but when adding a second processor (and by that also adding a new independent memory bus with the same speed) you get double the performance. I guess that in this application 4 Intel CPU's on a shared bus wouldn't do any better than one CPU, maybe even worse! Having 4 Opterons would probably be about four times faster than a single CPU. So for this particular application the Opteron rocks (I guess he'll buy Opterons soon) but the results will probably be less impressive for other more general tests. I do think that the Opteron is a great CPU anyway! /Regards Albert
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