ECS A770M-A motherboard
 

With the A770M-A ECS recently released their first motherboard based on the AMD RX780 chipset which has full support for AM2+ and the Phenom processors. The ECS A770M-A costs less than $70 making it the cheapest offering on the AM2+ market. Even though the price is low ECS has included features like Gigabit Ethernet, 8 channel audio and eSata connectivity.

http://www.techpowerup.com/reviews/ECS/A770M-A