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Hi,

I have a Dell poweredge 2800 with two xeon 3 Ghz processors and I loaded up
the trial version of xp professional x64 on the machine. The OS is detecting
4 cpus instead of the two I have (Why is it doing that?), and I do not know
how to change the settings.

For example, I see 4 cpu windows on the task manager performance tab, system
information pulls up 4 xeons instead of two.

Any help would be greatly appreciated.

Dell Enthusiast got up from the bar and shouted: :
> Hi,
>
> I have a Dell poweredge 2800 with two xeon 3 Ghz processors and I loaded up
> the trial version of xp professional x64 on the machine. The OS is detecting
> 4 cpus instead of the two I have (Why is it doing that?), and I do not know
> how to change the settings.
>
> For example, I see 4 cpu windows on the task manager performance tab, system
> information pulls up 4 xeons instead of two.
>
> Any help would be greatly appreciated.
>
>
>

Are they Hyperthreading enabled??

Mark,

Are you asking about the CPUs themselves or some setting on the OS?

The CPUs are hyperthreading capable, if that is what you mean.

Thanks

Ram

"Mark Gillespie" wrote:

> Dell Enthusiast got up from the bar and shouted: :
> > Hi,
> >
> > I have a Dell poweredge 2800 with two xeon 3 Ghz processors and I loaded up
> > the trial version of xp professional x64 on the machine. The OS is detecting
> > 4 cpus instead of the two I have (Why is it doing that?), and I do not know
> > how to change the settings.
> >
> > For example, I see 4 cpu windows on the task manager performance tab, system
> > information pulls up 4 xeons instead of two.
> >
> > Any help would be greatly appreciated.
> >
> >
> >
>
> Are they Hyperthreading enabled??
>

Dell Enthusiast got up from the bar and shouted: :
> Mark,
>
> Are you asking about the CPUs themselves or some setting on the OS?
>
> The CPUs are hyperthreading capable, if that is what you mean.
>
> Thanks
>
> Ram
>
> "Mark Gillespie" wrote:
>
>> Dell Enthusiast got up from the bar and shouted: :
>>> Hi,
>>>
>>> I have a Dell poweredge 2800 with two xeon 3 Ghz processors and I loaded up
>>> the trial version of xp professional x64 on the machine. The OS is detecting
>>> 4 cpus instead of the two I have (Why is it doing that?), and I do not know
>>> how to change the settings.
>>>
>>> For example, I see 4 cpu windows on the task manager performance tab, system
>>> information pulls up 4 xeons instead of two.
>>>
>>> Any help would be greatly appreciated.
>>>
>>>
>>>
>> Are they Hyperthreading enabled??
>>

So you have 2 physical CPU's both of which are Hyper threading enabled,
you will get 4 CPU's reported in Task Manager...

Dell Enthusiast wrote:

> For example, I see 4 cpu windows on the task manager performance
> tab, system information pulls up 4 xeons instead of two.

That's normal when you have a dual Xeon system with HT enabled.
If you disable HT in BIOS, Windows will only see two processors
when you restart.

It's not only a Win XP x64 thing though. The same will happen
in WinXP Pro.

--
Regards
Madsen

"Thomas G. Madsen" wrote:

> Dell Enthusiast wrote:
>
> > For example, I see 4 cpu windows on the task manager performance
> > tab, system information pulls up 4 xeons instead of two.
>
> That's normal when you have a dual Xeon system with HT enabled.
> If you disable HT in BIOS, Windows will only see two processors
> when you restart.
>
> It's not only a Win XP x64 thing though. The same will happen
> in WinXP Pro.
>
> --
> Regards
> Madsen


As discussed previously, taskmgr could show 8 CPUs in a machine with 2 dual
core hyperthreading-enabled processors.

Well, that explains it.

"Mark Gillespie" wrote:

> Dell Enthusiast got up from the bar and shouted: :
> > Mark,
> >
> > Are you asking about the CPUs themselves or some setting on the OS?
> >
> > The CPUs are hyperthreading capable, if that is what you mean.
> >
> > Thanks
> >
> > Ram
> >
> > "Mark Gillespie" wrote:
> >
> >> Dell Enthusiast got up from the bar and shouted: :
> >>> Hi,
> >>>
> >>> I have a Dell poweredge 2800 with two xeon 3 Ghz processors and I loaded up
> >>> the trial version of xp professional x64 on the machine. The OS is detecting
> >>> 4 cpus instead of the two I have (Why is it doing that?), and I do not know
> >>> how to change the settings.
> >>>
> >>> For example, I see 4 cpu windows on the task manager performance tab, system
> >>> information pulls up 4 xeons instead of two.
> >>>
> >>> Any help would be greatly appreciated.
> >>>
> >>>
> >>>
> >> Are they Hyperthreading enabled??
> >>
>
> So you have 2 physical CPU's both of which are Hyper threading enabled,
> you will get 4 CPU's reported in Task Manager...
>

Chris wrote:

> As discussed previously, taskmgr could show 8 CPUs in a machine
> with 2 dual core hyperthreading-enabled processors.

Also in WinXP Pro x32 or only in WinXP Pro x64 ?

--
Regards
Madsen

Yes. Aren't we all glad MS is counting sockets instead of cores?

"Chris" <> wrote in message
news:BD09D3D4-7C8B-49CE-AC5D-...
> "Thomas G. Madsen" wrote:
>
>> Dell Enthusiast wrote:
>>
>> > For example, I see 4 cpu windows on the task manager performance
>> > tab, system information pulls up 4 xeons instead of two.
>>
>> That's normal when you have a dual Xeon system with HT enabled.
>> If you disable HT in BIOS, Windows will only see two processors
>> when you restart.
>>
>> It's not only a Win XP x64 thing though. The same will happen
>> in WinXP Pro.
>>
>> --
>> Regards
>> Madsen
>
>
> As discussed previously, taskmgr could show 8 CPUs in a machine with 2
> dual
> core hyperthreading-enabled processors.
>
>

"Thomas G. Madsen" <> wrote in message
news:...
> Chris wrote:
>
>> As discussed previously, taskmgr could show 8 CPUs in a machine
>> with 2 dual core hyperthreading-enabled processors.
>
> Also in WinXP Pro x32 or only in WinXP Pro x64 ?
>

Yes, it is the same in x86 as it is in x64.

--

Regards,

Mike
--
Mike Brannigan [Microsoft]

This posting is provided "AS IS" with no warranties, and confers no
rights

Please note I cannot respond to e-mailed questions, please use these
newsgroups

"Thomas G. Madsen" <> wrote in message
news:...
> Chris wrote:
>
>> As discussed previously, taskmgr could show 8 CPUs in a machine
>> with 2 dual core hyperthreading-enabled processors.
>
> Also in WinXP Pro x32 or only in WinXP Pro x64 ?
>
> --
> Regards
> Madsen