Subj : Re: how to find whether a cpu is  hyperthreaded
To   : comp.programming.threads
From : eg
Date : Thu Jul 28 2005 06:32 am

mohit.jha@gmail.com wrote:
> Hi
> 
> I have been using WMI in Vb6 to find the details about the hardware. I
> need to find wheather the CPU is hyperthreaded, any way to do this in
> VB or any other language. I will be remotely connecting that machine.
> 
> Thanks 
> Mohit
> 


For,
Windows "Longhorn" or Windows XP Professional x64 Edition clients, or
Windows Server "Longhorn" or Windows Server 2003...

There is a function called:
GetLogicalProcessorInformation ( )

See: 
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/getlogicalprocessorinformation.asp



For older Windows 2000 and WinXP 32 bit clients

SYSTEM_INFO SysInfo ;
GetSystemInfo ( & SysInfo ) ;
DWORD count = SysInfo.dwNumberOfProcessor ;

This will return a count of 2 when you have 1 physical processor which 
is hyperthreaded...

.