Please recommend to me a graphics card and 32" monitor for my 2009 mac pro

I currently have the stock nvidia gt120 and a 27" samsung screen, which was cheap and does not seem like great quality.

I have my screen quite a distance from me for acoustic reasons, and feel like i'm straining my eyes a little.

I think a 32" is as big as I have space for.

I know nothing about graphics/ monitors but I want the clearest most pleasant viewing experience possible for using logic and pro tools - I'm looking at it 12 hours a day 6-7 days a week so I think it makes sense to splash out if need be...

Will my GT120 support a large screen? Would a better graphics card give me a sharper display?

Any info greatly appreciated as I'm a total dummy on this topic.