Under the motherboard page on gigabyte it says its EC AOD ACC, and can use used in the bios or amd overdrive utility
"EC AOD-ACC Support
EC AOD-ACC is described as Embedded Controller for AMD OverDrive- Advanced Clock Calibration, which is the newest feature comes from AMD SB750/ SB710 SouthBridge chip, destined for the AMD Black Edition CPU to be overclocked through BIOS setting or AMD OverDrive™ utility further than it was previously possible.
* Please be noticed that GIGABYTE’s product warranty does not cover damages caused by overclocking. "
copied off gigabyte website - http://www.gigabyte.us/products/product-page.aspx?pid=3475#ov