You can check out a good list of features and demo information from Neowin here .

Some bulletpoints taken from Neowin:

• HyperTransport Technology Assist, which reduces cache probe traffic between processors, which can result in faster queries and increased performance for database, virtualization, and compute intensive applications.
• HyperTransport 3.0 Technology, increases interconnect rate from 2GT/s to 4.8GT/s.
• Integrated DDR2 DRAM Memory Controller, incorporates Memory RAS for increased fault tolerance to reduce system downtime and increase system reliability.
• Independent Dynamic Core Technology, allows each core to vary its frequency, based on the specific needs of the application.
  This allows for more precise power management to reduce energy consumption.
• AMD CoolCore Technology, evaluates which parts of the system are needed to support currently running applications and can cut power to unused transistor areas to reduce power consumption and lower heat generation.
• AMD Smart Fetch Technology, allows inactive cores to write contents of their L1 and L2 caches to the shared L3 cache and allow the inactive cores to enter a "halt" state and draw less power, reducing CPU power consumption.