Overclocking monitor to a higher resolution on mac mini

Solution
your monitors panel has a specific pixel count. you cannot run higher resolution. the overclocking is refering to the hz. making your monitor run at higher vertical refresh rate.! as said in the link you have posted ''Slowly increase the refresh rate to see how far your system can go'' if you reach a non supported hz, monitor most probably will go black!
your monitors panel has a specific pixel count. you cannot run higher resolution. the overclocking is refering to the hz. making your monitor run at higher vertical refresh rate.! as said in the link you have posted ''Slowly increase the refresh rate to see how far your system can go'' if you reach a non supported hz, monitor most probably will go black!
 
Solution