Verifying Hyper-Threading Technology in Windows* XP

  • Thread starter Thread starter Peter Wagner
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P

Peter Wagner

Hi


"Determine whether Hyper-Threading Technology is enabled in Windows XP by
viewing the Task Manager's CPU history graph or Device Manager."

In my Computer I'll see 2 CPUs in the Device Manager, but only 1 in the Task
Manager.
Is this correct?

TIA
 
Peter Wagner said:
Hi


"Determine whether Hyper-Threading Technology is enabled in Windows XP by
viewing the Task Manager's CPU history graph or Device Manager."

In my Computer I'll see 2 CPUs in the Device Manager, but only 1 in the
Task
Manager.
Is this correct?

TIA
Click to expand...

Open Task Manager -> Performance Tab

Then:

View -> CPU History -> One Graph Per CPU

It should then display 2 graphs, one for each CPU?

I don't have an HT chip myself, I'm just guessing this would display what
you're looking for
 
Peter Wagner said:
Hi


"Determine whether Hyper-Threading Technology is enabled in Windows XP by
viewing the Task Manager's CPU history graph or Device Manager."

In my Computer I'll see 2 CPUs in the Device Manager, but only 1 in the Task
Manager.
Is this correct?

TIA
Click to expand...

With HT enabled, I get 4 x CPUs (dual Xeons) in Task Manager.
 
Open Task Manager -> Performance Tab

Then:

View -> CPU History -> One Graph Per CPU

It should then display 2 graphs, one for each CPU?

I don't have an HT chip myself, I'm just guessing this would display what
you're looking for
Click to expand...

Yes, that will work.

You will get twice as many windows as HT enabled processors.
 
Phil said:
Thanks.


Open Task Manager -> Performance Tab

Then:

View -> CPU History -> One Graph Per CPU

It should then display 2 graphs, one for each CPU?
Click to expand...

No, it doesn't.
Or the 2nd graph is invisible.
I don't have an HT chip myself, I'm just guessing this would display
what you're looking for
Click to expand...

p
 
I haven't followed this issue myself except in passing. This is the second
thread I've encountered where this HT vs number of graphs in task manager
has had TWO opposite reports of what one should see. That's in spite of the
number of CPUs shown in DM.

In my 875p(P4C800E Dlx)+Prescott+XPSP1 I get TWO graphs in Task Manager IF
the Task Manager-View-CPU History-One CPU per graph is set.
 
Ron said:
I haven't followed this issue myself except in passing. This is the
second thread I've encountered where this HT vs number of graphs in
task manager has had TWO opposite reports of what one should see.
That's in spite of the number of CPUs shown in DM.

In my 875p(P4C800E Dlx)+Prescott+XPSP1 I get TWO graphs in Task
Manager IF the Task Manager-View-CPU History-One CPU per graph is set.
Click to expand...

Ron

Thanks.
I can't set the Task Manager-View-CPU History-One CPU per graph.
It's disabled.

p
 
It should then display 2 graphs, one for each CPU?
Is HyperThreading enabled in the mobo BIOS?
Click to expand...

Hang on, what version of XP are you running?

IIRC XP Home will only utilize a single CPU (regardless of what the
BIOS says is installed) while XP Pro will utilize multiple CPUs (if
installed). My bet is you're using XP home, right?
 
Bob,

I'm using XP Home, P4P800-E Deluxe, P4/3.0C w/HT enabled in BIOS.

When I open Task Mgr (Ctrl-Alt-Del)>Performance Tab>View>CPU History>One
graph per CPU, I see two graphs in the section called CPU History.

John
 
Bob Rafuse said:
Hang on, what version of XP are you running?

IIRC XP Home will only utilize a single CPU (regardless of what the
BIOS says is installed) while XP Pro will utilize multiple CPUs (if
installed). My bet is you're using XP home, right?
Click to expand...

I think you may be confusing only XP Pro's ability to run multiple
processors, with the "virtual" processors that HT generates? So even a
single HT cpu should have 2 graphs in Task Manager.
 
I'm using XP Home, P4P800-E Deluxe, P4/3.0C w/HT enabled in BIOS.

My bad. XP Home _does_ support hyperthreading, because it only
supported a single proc.

I could have ~sworn~ I read during the XP beta that Home would not
support HT. I can't find whatever MS docs I thought I'd read now.

Sorry for the confusion.
 
I think you may be confusing only XP Pro's ability to run multiple
processors, with the "virtual" processors that HT generates? So even a
single HT cpu should have 2 graphs in Task Manager.
Click to expand...

Yeah, I was wrong. XP Home _does_ support HT, just not SMP.

Thanks,
 
Try this (from Intel)
Click to expand...
http://downloadfinder.intel.com/scr...sp?agr=Y&Inst=Yes&ProductID=1687&DwnldID=7595

Thank you for your hint and link.

But this utility is useless.
The BIOS-Test fails:

'Das Testutility für die Hyper-Threading-Technologie konnte nicht
feststellen, ob bei diesem System alle erforderlichen Komponenten vorhanden
beziehungsweise aktiviert sind oder funktionieren.'

It means
'The utility couldn't determine, whether at this system all required
components exists, are activated or works.'


I've got WinXP Pro and an ASUS P4P800-E Deluxe MB.

p
 
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