2 cpu's registering in device manger

[rakone]

I'm not sure if this is a problem, but I am very curious of this. In win xp pro when I go to device manager & look at the cpu's installed it shows 2 of them (i only have one installed) and when i go to systems properties on the general tab under computer it say's
Pentinum 4 CPU 2.40
2.40

It say's it twice there too any reason for this.

Thanks for any info.

 

[bcastner]

Is the processor a P4 HT? If so it is treated by XP as two processors.

 

[rakone]

Thank you bcastner
Yes it is a p4 HT do you know why it does that i was just curious.

Thanks

 

[bcastner]

Your BIOS will create an APCI table that shows two processors. During installation XP will depend on the APCI information from the BIOS to determine whether it should place in the HAL the power profile for a single APCI or multi-processor APCI computer.

That is the why it shows two installed processors; with the appropriate software the HT can act like two processors. cf.

http://www.intel.com/support/processors/pentium4/pentium4_ht.htm

This is one of the few instances in which changing the Hardware Abstraction Layer can reliably be done through Device Manager. But I would not touch it if it was my machine.