Scott Gammans wrote:

>>
> 
> And that explanation would make sense, except that during both 
> benchmarks I set Render Priority in POV-Ray to "Highest", so even if 
> Windows 2000 was ignorant of hyperthreading, wouldn't it still avoid 
> scheduling background tasks because POV-Ray was running at highest 
> priority?
I think that win 2k does know what hyperthreading is and consider your 
box have only one processor

XP understand what Hyperthreading is and consider your box have two 
processors. So pov execute on one proc and the rest of the process are 
bounded to the second (virtual)

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