It's less about AMD, and more about the motherboard manufacturer. You can't expect a $50 motherboard to support all the latest CPU options. It comes down to "You get what you paid for."
If you had paid for a $200 motherboard, you can bet that it will support all of AMD's (desktop) processors.
Base on this: http://www.gigabyte.us/Support/Motherboard/CPUSupport_Model.aspx?ProductID=2813#anchor_os
The 940 and 925 are your best bet.