With medium to high settings at 1080p and a 9600k you should, for MOST games, be right there in the 144fps conversation. It would probably however be prudent to make sure you get a monitor that has G-sync compatible Freesync, or actual G-sync, (G-sync compatible Freesync monitors are a LOT less expensive) so that for any games that are particularly CPU intensive that you aren't able to hit golden numbers with, it is able to keep any tearing problems under control.