A computer motherboard's bus speed has no effect on the installed CPU's speed. In a computer, the motherboard and the CPU are two separate components and do not impact the performance of one another.
Netbooks run basically the same OS as your desktop PC, but their portability and low cost mean that they're made to run a bit slower. By overclocking you can push it just over the speed bump to where ...
Overclocking, the practice of running a computer's processor at a faster speed than its factory rating, is frequently practiced by enthusiasts and gamers, but can also be a useful business tool.