On Sat, Jan 07, 2006 at 11:00:44AM +0100, Jerome Warnier wrote: > processor : 0 [snip] > physical id : 0 > siblings : 2 [snip] > processor : 1 > physical id : 0 > siblings : 2 [snip] Both CPUs are physical ID 0 and both say they are part of a set of 2 siblings. I am quite sure that means it is using hyperthreading, and is not dual core or dual cpu. Just hyperthreading. Len Sorensen