The AOC AGON AG271QG is one of the least expensive 27" high-end gaming monitors on the market. Your money will buy you an AHVA (IPS-type) 1440p panel with a refresh rate that goes all the way up to 165 Hz, as well as a G-Sync module for sublime smoothness of in-game action.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips