sorry if this is a dumb question las time i built a pc the highest speed was 800mhz i have a soyo dragon 2 plus mobo and an amd xp3000 with 333 bus speed the mobo only show 100 133 166 and 200 if im not mistaken but in its discription at new egg it says 400 333-266 can anyone explain this to me and do i have to do something in the bios when i eventualy turn this on to make it 333 thanks here is the link to my board http://www.newegg.com/app/ViewProductDesc.asp?description=13-139-145&depa=1