Your RAM may be capable of going above 150 FSB, but all the rest of your components have to be able to do so also. That is the downfall on many attempts such as this. Because the ECS board does not offer any PCI divider adjustment, things can get unstable when increasing the buss speed of your devices as a result of increasing the FSB. Actually 146.65 ain't too shabby and you should be pleased. The only other thing that could possibly hold you back a bit would be temps. I am assuming that you had this handled prior to your attempts though. What kind of numbers (temps) were you running?