ThrottleStop overclocks your PC so it's running at it's maximum. However you have to watch out so your pc doesn't overheat so i also included a program called real temp which tell you your CPU's temperature. You could also try water cooling.
ThrottleStop: http://www.softpedia.com/get/System/Benchmarks/ThrottleStop.shtml
Real Temp: http://www.techpowerup.com/realtemp/
ThrottleStop: http://www.softpedia.com/get/System/Benchmarks/ThrottleStop.shtml
Real Temp: http://www.techpowerup.com/realtemp/