downsample

I'm a not an expert in this, so if any of this sounds funny then please educate me. :) Things are pretty complicated to explain so kindly take some time to read and reply, i might be over-explaining simple things here or under-explaining complicated things. I will be listing a scenario/case and...

hello i have an asus amd r7240 2gb low profile. i have read its specs and there is written: DVI Max Resolution : 1920x1200 Digital Max Resolution:1920x1200 but when i goto my screen resolution option i see my resolution from 800x600 to 1600x1200 and same in games. why cant i get 1920x1200...