Overclocking To 3.73 And 4.0 GHz
Raising the multiplier from x13 to x14 allowed for bumping up the clock speed from 3.46 to 3.73 GHz.
All Extreme Edition processors come with a preset multiplier, but it can be changed within a range of x6 to x60. This is not possible with regular Pentium 4 or Pentium D models. Changing multipliers represent an ideal way to overclock by enabling the CPU core clock to be increased without messing with any other system component - simply select a higher multiplier. The second option is to increase the system clock speed in order to boost Front Side Bus and memory bandwidth. At the same time, the multiplier often needs to be lowered to avoid heavy processor overclocking.
Both x14 and x15 (3.73 and 4.0 GHz) could easily be done and we did not even have to increase the core voltage.
4.0 GHz was no problem either!