Jonas Magnusson :
Overclocking a monitor? Now that's really creative. First of all a monitor dosen't have a clock speed, instead it has a refresh rate. 60 Hz = ~60 FPS
Except that monitors have circuitry inside them to process the digital signal of the image and refresh the screen, which does run at a specific clock rate and can be overclocked. Monitor overclocking is a very common way to get higher refresh rates on a monitor, and is currently the only way to get more than 60Hz on an IPS monitor that I know of.
Unfortunately, I don't really know what to expect out of overclocking this specific monitor, though. If anything, you can try to overclock it, and see if it works stably. Just don't push for 120Hz or even 90Hz off the bat; it's likely to damage the monitor anyway, so don't risk it too much.