The highest I can get the multiplier for my tastes is 10.5, but the motherboard will go up to 12. I could probably get the multiplier up to 11 or 12 if I lowered my bus speed way under 133, but whats the point of that? Its like trying to ram a chili dog into a babies mouth - it just don't take well.
The highest I can get the chip is 1430 - 10x143. 1430 is definatly my limit running at mobo max of 1.85 volts.
I usually run mine at 1387 - 9.5x146 so I can have the highest FSB speed my board allows. I getter better gaming performance from the lower clock/higher bus speed. 10x146 won't boot -=P