general question on speed using quad core Xeons

[Satish Balay]

On Wed, 16 Apr 2008, Berend van Wachem wrote:

> Hi Barry,
> 
> 
> > http://www.intel.com/performance/server/xeon/hpc_ansys.htm
> > http://www.intel.com/performance/server/xeon/hpc_md_nastr.htm
> 
> 
> Aren't both benchmarks run on Quads? The difference just being the cache per
> processor? Or am I mistaken?

Yes - both are quads, and yes - the cache sizes are different.

But I think the primary feature that contributes to the performance
difference is memory bandwidth.  The first one is 1333 FSB, the second
one is 1600FSB - i.e 20% improvement in memory bandwidth => 20%
improvement in performance for the above benchmarks.

Satish