Good news: The ASUS VG248QE monitor is G-SYNC upradeable!
Don’t know what G-SYNC is?
G-SYNC eliminates tearing, eliminates stutters and reduces input lag.
See GSYNC Preview Part One: Fluidity and Part Two: Input Lag.
NVIDIA says:
“For a limited time, we are making a G-SYNC Do-It-Yourself Kit available. If you have an ASUS VG248QE monitor, you can purchase the kit and mod your monitor. Assuming you are proficient with moding, this solution might be right for you. The installation process should take approximately 30 minutes.”
If you prefer G-SYNC to be already included, see List of G-SYNC Monitors.
Several monitors with G-SYNC built-in, are coming before the end of 2014.