You shouldnt have a problem running any Athlons up to 1.2Ghz. However current Athlons do have a max multipler setting of 12.5x. Anything beyond that must be achieved by over clocking your bus. A bios update may be necessary for your A7V to correctly post the processor speed above 1Ghz. This is just eye candy and I would not recommend a bios flash just for the sake of seeing the correct posted speed.
<font color=green> slice-N-dice </font color=green>
Nothing travels faster than the speed of pain