no, you don't need to overclock. you might get more performance if you do, but you don't NEED to. What do you think will happen if you get a minor bottleneck? will the world come to an end? So many people ask this question as if a bottleneck will ruin their lives. There is always going to be a small bottleneck somewhere in any system, nothing can be 100% balanced, but no, its not the end of the world.