Re: Is XP accessing both CPU cores?


"bambu" <bambu@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:A30AE975-8166-4F65-92CE-128F9A2AADF6@xxxxxxxxxxxxxxxx
> Pentium D 820, i945P, Windows XP Pro SP2, latest drivers, bios, etc...
>
> Device manager detects and displays both cores as two physical
> processors...
> but, Task Manager's performance tab only seems to be accessing one CPU -
> one
> Usage history graph. Under view > CPU history - One Graph per CPU is
> checked
> off and greyed out... most of the time. The latest version of CPU-Z can
> only
> detect information from one core (selection menu greyed out)... etc.
>
> So, is XP using both cores? In a P4 w/HT you would see two performance
> graphs... is there something preventing me from using both cores ?
>

Task manager can display one graph for both CPU's or one graph per CPU. Go
to View/CPU History to change.

My Dell 9100 bios lets me disable the second core. However, I don't think
that is your problem given that two are showing up in the device manager.

The load should be 50% for a single job CPU intensive job if both cores are
enabled. If you see 100% load for a single job, then you are using only one
core.

Peter


.

Relevant Pages