Highest FPS?

omg, do you know that any fps value over ur monitor refresh rate is 100% useless and you will probably have screen tearing (google it if you dont knoe) if fps are higher than refresh rate.
Use nvidia g-sync if you can, or at least v-sync, every game has vsync option... It just syncs fps to your monitor refresh rate and a 60fps game on a 60fps monitor will be smoother than a 1000fps game on a 60fps monitor.
And having 1000fps will cause your gpu to always work at 100% for no reason or gain (more hat and less hardware durability)