There is not much that is different in the X58A-OC's BIOS; it is built off of GIGABYTE's familiar Award BIOS. The first item is the Motherboard Intelligent Tweaker page (M.I.T.); not much that we have not talked about before here. Still, it does have what you need to get your overclocking done.
You have your current status page.
The rest of the BIOS is fairly typical for an X58 board.
The next item inside the M.I.T. page is the Advanced Frequency page. Here is just what you would think; items to change the BCLK, Ratio and also the drives and skews for the CPU. You also have some rudimentary items for tweaking the memory.
But if there are not enough memory settings for you on the Advanced Frequency page, there is always the Advanced Memory Settings page.
If you are looking for voltage options, they are here too; in the Advanced Voltage Settings page (of course).
There is more to the BIOS than just these pages, but they are pretty routine.
Even the power management settings are fairly routine.