Nice board choice
If your considering OCing your PC, do it the right way, get some decent cooling first, get a decent surge protected PSU and go in small increments only, jumping up too far will short/melt something (done 3x so far... ooops).
Also, As above mention, the front side bus (FSB) is what controls data flow through the "bus", the higher it's set the faster data will flow, but excess power is consumed and excess heat is therefore created around the entire system.
Next best thing to clock is the memory, before you try this, get a memtest disk created, and test before clocking, and along the way for stability and fault dangers. You will see some decent returns for a clocked module, but again, more heat is created and more power is used, and your RAM sits right under your HDD and DVD in a normal ATX machine, so cool all of these.
Lastly, there is your CPU and graphics bus and GPU. These don't offer huge returns, but are at less risk as upgraded cooling is easy and not too expensive anymore, that being said, you still need to be just as carefull when clocking up the potential, heat and consumption also rises, and there are bound to be many vital components close by.
If you want to know how extreme you can go, I once spoke to a guy trying to purposely pop his CPU, he used a full size house radiator and chemical coolant to keep his machine cool, and had his CPU at 150% of it's original processing capacity (back in the P4 days).
So the end note, don't clock what you can't afford to replace, and just go steady, adjust by 1 click at a time, and reboot and check stability for at least an hour. You'll be fine
