[CentOS] OT: 4 dual cores agains 2 quad cores

Sat Sep 1 08:40:56 UTC 2007
David Amiel <davtmp at bubble.dyndns.org>


to my mind the most impacting on a SMP server is the synchronisation time
between dies/cores. the time to synchronize 2 cores on different dies is
higher than the time to synchronize 2 cores on the same die. So to achieve
best performances you have to limit number of dies.
So a dual quad core should be more powerful than a 4 dual core.

You can verify this here : http://www.spec.org/cpu2006/results/cpu2006.html

results on a 2 chips server are ~20/30% higher than a 4 chips using the
same processor


David Amiel

Le Sam 1 septembre 2007 04:51, Erick Perez a écrit :
> Hi people,
> Do you have pointers to web documents that help me make comparisons
> between buying a server with two quad core 2.33 ghz or buying a 4 dual
> core 2ghz server?
> I am trying to answer a question of performance. It is not important
> the redundancy/failover or the price of the server. Just the
> performance.
> obviously all the hardware specs are the same, the question is the CPU.
> --
> ------------------------------------------------------------
> Erick Perez
> Panama Sistemas
> Integradores de Telefonia IP y Soluciones Para Centros de Datos
> Panama, Republica de Panama
> Cel Panama. +(507) 6694-4780
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