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Date: Mon, 24 Oct 2011 19:13:43 -0400
From: Erik Winkler <ewinkler@...ls.com>
To: john-dev@...ts.openwall.com
Subject: Re: new DES key setup


> 
> Hmm, apparently Core i7 2600S is rated at 2.8 GHz standard, 3.8 GHz
> turbo - so that's way more than a 10% difference, which would explain
> what you're seeing.  On the other hand, some other i7's at 2.8 GHz have
> much more limited turbo modes (such as 3.1 GHz max) or none at all.
> You did not mention which one you have.
> 

You are correct.  The iMac CPU is the Core i7 (I7-2600S) version.  Turbo up to 3.8Ghz.

I guess that means OpenMP somehow disables turbo mode or is it some kind of safety mechanism on the CPU to keep it from burning up?

Erik

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