How To Overclock Monitor. Click on advanced display settings. If its not already installed in your system you can download Custom Resolution Utility it online for these best 24 inch monitor under 150.

How to Overclock Monitor. Under Detailed resolutions select the monitor you want to overclock and click the Edit button. Click change resolution and then create custom resolution.
On the new window that opens enter a higher value in the Refresh Rate field and click OK and then click OK again to close the window.
Now go to the Advanced display settings option from the same Display settings window From the next window click on the Display adapter properties for Display 1 Now a new mini window will open up Click on the Monitor tab and select the new high refresh rate from the Screen refresh rate dropdown menu. Expand the display menu. The GeForce display driver itself supports custom refresh rates so checking how far your monitor overclocks is just a matter of opening the NVidia control panel selecting Change Resolution. Under Detailed resolutions select the monitor you want to overclock and click the Edit button.