i have a biostar motherboard that supports up to 533 front side bus and a celeron 2.66 that runs at 533 front side bus. the only oc options i have in bios is to change the 133 bit like in 20x133. i changed it to 20x135 and my voltages even out and were solid and my temp readings went down about 4 degrees celcius. so far so good, the only thing that worries me is that when i did that my front side bus went up to 540. i dont want to fry the motherboard cause i cant afford to replace it. so what do you think?