UEFI BIOS
Below is a video showing the various BIOS Settings you can adjust on the SABERTOOTH Z87. You can watch it in HD and pause it to check out the details. You can find the minimum and maximum ranges for the various frequencies, multipliers, voltages on the right pane of the BIOS screen.
My Favourites and Quick Note are very nice features that makes the ASUS BIOS stands out from other brands.