BIOS options on the board are typical of GIGABYTE boards. GIGABYTE uses the Phoenix Award BIOS which is used by many motherboard manufacturers. The board is overclocked by default by 12MHz. GIGABYTE decided to allow the FSB to be overclocked ½ a MHz at a time, up to300MHz from the 200MHz default FSB. PCI Express frequency can be set from 100-145MHz in 1MHz increments. CPU clock multiplier can be set from default to the multiplier of the said CPU. One thing missing from the BIOS is the ability to change voltage settings.
I was able to overclock the 4000+ we use for testing up to 5% without any issues as to stability. The 4000+ we use tends not to overclock very well, so this is an acceptable overclock. We recently got in an ATI RADEON X1800XL and it performed without issue on the motherboard, except in some instances the video card temperature would read a very hot 87 degrees Celsius. Stability was excellent throughout the 4 days I spent with this motherboard in my main computer.