[Tfug] Dual cores and hyperthreading

[Gordon Zaft]

 I believe this is incorrect.

 There are CPUs (9xx series "XE", for one) that have
both HT and dual-core.  When you run a 955 in XP you
see 4 processors in Device Manager.

 Some BIOSes are, I think, too stupid to make this
distinction; I've also seen some BIOSes that use "HT
enable" as if it were "enable 2nd core".

G

--- Harry McGregor <micros at osef.org> wrote:
> Here is my guess, and it's only a guess.
> 
> Intel kept the HT in the CPUID, so that they would
> side step software 
> licensing.  Windows XP Home is only single CPU, but
> it does support "HT" 
> CPUs, or quasi dual CPU (SP2 required IIRC).
> 
> Thus instead of calling it an SMP processor, calling
> it HT enabled, 
> permits XP home to use both cores.
> 
> 
>                                   Harry
> 
> 
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------
Gordon Zaft
zaft at zaft.org

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