sure can, but if your chip need more juice, you still need to increase the voltage. btw, try use existing thread in this forum. according to your siggy, try seek the solution here >http://forum.lowyat.net/topic/1143995

if your original CPU clock is 3.5GHz, means you had overclocked about 10% (assumption only). so far i know overclocking can be done at your mobo BIOS by the same method, increasing the multiplier and core voltage.