I dont know if your card will support it but I have 3 x 2560x1440 screens and IMO it's too much for a 28" screen, my eyes are pretty good but I need my browser screens zoomed to at least 125% to be able to read them.
Most web sites look absolutely lost on a page that size, just to give you an idea I've taken a snip - not of all the screen because the snipping tool just refuses to do it, but I took a slice.