you do not need to raise the voltage at all unless it is a pretty big jump I overclocked my phenom II x6 1045T from 2.70 to 3.40 ghz torture tested with prime 95 for 8 hours and my games play a lot smoother no issues and no voltage messed with you could use AMD over drive to raise the Multi but you don't need to raise it much to reach 3.6 as the post above stated all cpu's differ but the voltage does not need to be raised from the stock fitted voltage of the factory clock speed as it will perform fine unless yo are going really high trial and error best way to do it but know what your doing before you go increasing voltages for the most part there are safety measures worst case your system will not post then you must reset the CMOS...