MacBook Pro (Retina, 13-inch, Early 2015) with a larger external display

I'm thinking about purchasing a external display which is 34 Inches and has a resolution of 3440 x 1440 with my Macbook Pro ( Retina, 13-Inch, Early 2015 ) which has a resolution of 2560 x 1600. I worried since the resolution and aspect ratio of the external display is bigger than than that of computer, It would not be able to power the monitor efficiently. Thanks for any help!