Intel employee's Scott Smith & Mike Ferron-Jones recent podcast around the various models for computing. The video is embedded in this blog, and can be viewed here. 

 

 

The performance studies he references in the video are: http://communities.intel.com/docs/DOC-1322 and http://communities.intel.com/openport/blogs/ecmf/2008/01/25/streaming-impact-on-the-server-and-network

 

This is of course the Intel perspective - does it align with what you see?