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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