How to determine monitor's Maximum Screen Resolution ?

[MZaeemQ]

As the title says, how can i check my monitors maximum supported resolution ? I've a 24" benQ LED monitor and it showed 1920*1080 as recommended on the top of screen resolution settings. after updating my card's (AMD 7950's) drivers it now shows 2560*1440 as recommended. apparently the maximum supported resolution has changed which I dont understand.

 

[Petrossa]

Check the manufacturer's website for the particular display model that you have.