No, the A4 CPU family is not supported on the M4A78 board. Compatible processors are listed here if you're looking to upgrade:
http://www.asus.com/Motherboards/M4A78/HelpDesk_CPU/
No, the A4 CPU family is not supported on the M4A78 board. Compatible processors are listed here if you're looking to upgrade:
http://www.asus.com/Motherboards/M4A78/HelpDesk_CPU/