Will a GTX 760 provide a good resolution on a 27" monitor

Solution
Almost any graphics card you can buy supports 1440p, its just a question of whether it has the grunt to push out an acceptable frame rate at the settings you want in games.

Have a look here, its a review for the GTX 760 but it also shows how other graphics cards fare in the benches. Look up a game your interested in, and you should see how the card performs at those settings and at that resolution.
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_760/1.html
It will be able to provide the same resolution on each monitor.

If your question is if it will be able to play games at 1080p or 1440p, it is able to play games at high settings at 1080p but should not be used for 1440p (2560x1440)

If, however, your question is, however, if 1080p looks bad at 27", I would say so. I've seen 24 inch 1080p monitors, the sharpness/ DPI is fine on them, but at 27 inches, everything seems a bit blurry. If you want to go 27 inches, go 2560x1440. It looks a lot better.
 

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okay what about a AMD hd 7950 will it support 1440p?
 
Almost any graphics card you can buy supports 1440p, its just a question of whether it has the grunt to push out an acceptable frame rate at the settings you want in games.

Have a look here, its a review for the GTX 760 but it also shows how other graphics cards fare in the benches. Look up a game your interested in, and you should see how the card performs at those settings and at that resolution.
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_760/1.html
 
Solution