100-132MHz FSB => 3/3
133-165MHz FSB => 4/4
166-199MHz FSB => 5/5
200MHz > FSB => 6/6

For example, set your CPU FSB/DDR Ratio to 5/5 if you have your processor running at 166MHz (333MHz DDR) FSB. Set your CPU FSB/DDR Ratio to 4/4 if you have your processor running at 133MHz (266MHz DDR) FSB. And so on and so forth.

*This information confiscated from the official Abit Forum.

a tohle je zajímavé

PCI isnt automatically locked - except for 5/5 - 6/6 settings on bios