Okay, so with a CPU, there is a clock signal generated on the motherboard. This is known as the base clock, bus speed or sometimes the Front side Bus. this speed is often 100MHz with newer intel chips, and 200 with AMD chips. think of it as a timing belt for the car, it keeps things in sync. the CPU has a multiplier which is based off of the base clock signal it receives. Generally, when one wants to overclock, they will go for a pure multiplier overclock. This is because it is easier to do ( at least because more people talk of it. ) So, if you have a base clock of 100MHz, and you change the multiplier from 35 to 40, you are chaning the CPU speed from 35X100=3500Mhz=3.5 GHz to 100X40=4000MHz=4.0 Ghz. Locked chips will not let you change the multiplier. but as we can see with the numbers, as they get multiplied together, increasing either one yeilds a net boost in speed. thus getting the base clock speed to 105 and keeping the multiplier at 35 yeilds 105X35=3675MHz=3.67MHz. So you have overclocked, but you have not changed the multiplier. as an added bonus ( or challenge if your RAM is not rated for high speeds) the RAM as it is also running on the base clock also speeds up. so, in the bios if you go to advanced mode, there should be options for multiplier and base speed. simply increase it one at a time, boot and then bench with prime 95 or Intel burn test with as much RAM as you can allocate to it ( if you have 8 GB of RAM give it 7.5 if you have 16 GB give it 15.5, the more RAM the greater the stress, and the easier it is to find instabilities.)
keep going until the system is unstable. you could even get to 107. my AMD system has gotten a base clock up to 219 (+19 MHz or 8.5 MHz on an Intel system.)
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