http://www.ocworkbench.com/index.stm

Recently we have been testing lots of mainboards. While going through the review process, we discovered that there are a number of manufacturers tends to default their 133Mhz fsb at 134.6 or even higher FSB. What does that mean ? That means that they secretly overclock their systems for media reviewers like us.

Most media publications might have overlooked this growing trend and manufacturers sending overclocked bioses for review sites. We see that this is not a fair playing ground when we compare boards of the same chipset since the results might differ up to 100 points (in 3Dmark2001SE). You can check the default fsb using WCPUID (downloadable fom www.h-oda.com)

I would suggest that all manufacturers to stick to 133.33Mhz as the standard. If the clock gen used cannot generate 133.33 exactly, a FSB range of 133.3 ~ 133.7 should be encouraged.