Source:
CPUID.com
ClockGen is an program dedicated to overclocking. Its main purpose is to change the system clocks on the fly : FSB (Front Side Bus) and GSB (Graphic Side Bus). ClockGen also provides some functions that allow you to improve and monitor your overclock.
Keep in mind that overclocking may damage your system.
Use it at your own risk !
ClockGen is free.
More Info
HERE