PCMag.com just release some details about AMD’s Six-Core Opteron that runs on 40 Watts. The six-core AMD Opteron EE consumes 40 watts, and is designed for 2P servers, among the most popular in the virtualized server space. The chip will cost $989, and will begin shipping on Monday. Mark Hachman wrote up the details here: http://www.pcmag.com/article2/0,2817,2352212,00.asp
Here is Newegg.com’s list of Six-Core Opteron that are available now. At the date of this post they are not listing the new AMD Opteron EE.