You're basically raising the clock speed. It's clocked at 3.4GHz stock, correct? So, you raise the clock speed to something higher, like 3.8GHz, for example. It's not to difficult if you read some tutorials and follow their directions. But, you will need a CPU cooler to cool down the CPU. A great CPU cooler is the Hyper 212 EVO. I have it, and lots of other own it. It's fantastic, and cools down the CPU a lot.
So I'd have to remove the stock fan that came with it? Isn't it already concrete glued by the thermal paste though?