EXTREME Overclocking has just posted a review on AMD's Six-Core Phenom II X6 1090T & 1055T Processors. A quote from the article:

Back in January 2009 AMD took a major step forward with their first Phenom II processors. A little over a year later now, the next big evolution has arrived! AMD has brought the first affordable six-core desktop processor to market. Codenamed Thuban, this X6 processor features two additional cores over the existing AMD Phenom II X4 Deneb design.

>> AMD Six-Core Phenom II X6 1090T & 1055T Processors Reviewed