TechARP's Desktop CPU Comparison Guide

Bill McGonigle bill at bfccomputing.com
Tue Feb 13 14:45:10 EST 2007


On Feb 13, 2007, at 12:22, Neil Joseph Schelly wrote:

> The only hard part I've had in picking processors in the last few  
> years is
> remembering which models have hyperthreading or dual-cores and  
> which ones
> have the virtualization instruction sets.  The rest is pretty  
> useless - any
> new processor these days is pretty much as fast as you need it to  
> be and will
> run largely no differently than the rest except for those metrics  
> they didn't
> list.

I forget which one it was but in one of the new dual-core Xeon lines  
a model xYxx ran certain applications (mysql in this case) 40% faster  
than an xZxx.  If there were an easy way to remember the CPU models I  
could probably tell you which ones. :)  The Z-level processor ran  
about $500 more than the X-level processor (each).  More cache, at  
least, was part of it.  I can probably dig up the study if somebody  
needs it.

n.b. PostgreSQL scaled linearly with CPU speed, on both CPU's,  
closely matching the higher performance level of mysql on the Z-level  
CPU.

-Bill

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