Hi,
That Sempron you are using is multipler locked, so you won't be able to do that.
For that matter, even for processors that are not multipler locked (like some of the Althon XPs etc.,), I would
not recommend exceeding the recommended mutiplier unless you are deliberately trying to overclock (and are aware of the risks involved) --
or in other words if you had a processor that is recommended at 9x and you stepped it up to x13.5
-- the computer would not pass the P.O.S.T (power on self-test).
-- If it did, some crashes sooner that you would expect.
-- Your processor would fry up -- motherboard would be damaged as well.
-- et cetera et cetera
Cheers,
DH