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Subject: Re: Question about hyperthreading ...

Author: Frank Quisinsky

Date: 16:26:34 01/09/04

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On January 09, 2004 at 18:46:23, Thomas Mayer wrote:

Hi,

Windows 2000 don't support hyperthreading!

Windows XP _Home_ supported hyperthreading for an single Xeon / newer P4
processors but not for an dual Xeon system. You have to used Windows XP
Professional. OK, this information is quiet plain for me but I don't believe
that a program which get 100% CPU time (Xeon Dual System, engine-engine match
with ponder) will get more speed unter Windows XP Pro with Hyperthreading = On!

If so, I have to buy a new OS because I use Windows 2000 SP4 without
hyperthreading (don't aktivated in my bios so far).

I believe with hyperthreading = On the engines are 0% faster and SMP compatible
engines are a little bit slower (I am not sure).

It's very interesting for me.
I am not sure to buy Windows XP Professional!

Best
Frank



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