I'm impressed; this shows high levels of total gibberish and misunderstanding, even by The Register's often variable standards:
The reason? Dothan's shorter pipeline is "poorly suited" to HyperTransport, which leverages under-utilised processor maths units and other trickery to fool the host operating system into thinking it's running on a two-way box.
http://www.theregister.co.uk/2004/06/10/intel_prescott_future/ 
