Here is a link describing hypertransport:
<A HREF="http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_861_1030,00.html" target="_new">http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_861_1030,00.html</A>
Here is alink describing hyperthreading:
<A HREF="http://www.intel.com/technology/hyperthread/" target="_new">http://www.intel.com/technology/hyperthread/</A>
As you will read, they are too very different technologies-although I would love to see A64's and FX chips ith hyperthreading.