Just finished up an article on AMD Dual Core Opteron.

It's been a ton of last minute benchmarking, but well worth it.  Dual Core is set to make huge tracks in the server market, with impressive scaling.   Uniprocessor server configurations might well rise and Dual processor database servers will essentially perform like a 4P system.  Intel is still setting their Dual Core launch for Q1 2006.  We had a chance in the review to benchmark Intels latest Quad Xeon servers based on their new E8500 chipset, the system we had required 208V, a bit unusual from our experience but apparently doable at most NOC's.  So, we had to wire a 240V circuit in the lab.   The article covers both desktop and server performance, workstation is on the way.  The server stuff is near the beginning and covers web & sql performance.

Article: http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2397