WinXP Pro and Dual HT-enabled Processors

[Matt...]

I have been looking around to see if WinXP Pro fully
supports a dual processor (Xeon) environment with
hyperthreading technology incorperated.

I know I need XP Pro for dual processor environments (the
Home version doesn't support that). But does XP Pro count
virtual processors or physical processors? I know XP Pro
supports hyperthreading technology and only accepts dual-
processor environments but does the second virtual
processor count in each physical property as an actual
processor according to EULA? The EULA, as far as I have
seen, does not make a distinction between a virtual
processor or a physical one. So I am wondering if I have
a dual HT-enabled processor environment is all of the
processing power going to be utilized or just two of the
four "virtualized" processors going to be use?

Thanks,

Matt

[Jason Tsang]

It counts physical processors.

If you have two HT enabled processors, Windows XP Pro will work with four
logical processors.

--
Jason Tsang - Microsoft MVP

Find out about the MS MVP Program -
http://mvp.support.microsoft.com/default.aspx

"Matt..." > wrote in message
...
> I have been looking around to see if WinXP Pro fully
> supports a dual processor (Xeon) environment with
> hyperthreading technology incorperated.
>
> I know I need XP Pro for dual processor environments (the
> Home version doesn't support that). But does XP Pro count
> virtual processors or physical processors? I know XP Pro
> supports hyperthreading technology and only accepts dual-
> processor environments but does the second virtual
> processor count in each physical property as an actual
> processor according to EULA? The EULA, as far as I have
> seen, does not make a distinction between a virtual
> processor or a physical one. So I am wondering if I have
> a dual HT-enabled processor environment is all of the
> processing power going to be utilized or just two of the
> four "virtualized" processors going to be use?
>
> Thanks,
>
> Matt