Your screen can not physically display more FPS than what the HZ is locked at. 60 HZ (60FPS) or 144HZ (144FPS). While you might think you're seeing better FPS you are only seeing the most recent frame your monitor displayed. It's dropping all the frames in between.
https://www.youtube.com/watch?v=hjWS...l=3kliksphilip
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You don't need either technology to take advantage of a 144HZ monitor. Your card supports 144HZ. Plug it in using a display port to display port connection to that monitor you have. 144HZ will show up in Windows in the monitor properties. Launch your game and set it to use the higher refresh rate. You should see a dropdown to set it to the higher HZ here. http://imgur.com/a/IAoKI