What's left is what the eye can actually see, being that 144hz is the fastest refresh rate on the market right now. G-Sync effectively caps framerates at 144 fps, so we don't get any crazy fast frame renders that are not seen/produced by the monitor. The purpose of this site / benchmarks was to test in config settings to see affects on performance while using G-Sync 1080p to really tell what frames are seen. ASUS VG248QE w/ G-Sync Mod (G-SYNC ENABLED)