The 50 participants ranged from avid, hard-core gamers to more casual ones that perhaps hadn't even played the games we had selected for the occasion.
We had 12 PCs from Tones.be, equipped with Intel Core i7 4770K Haswell processors (overclocked to 4.2 GHz) and Nvidia GeForce GTX Titan graphic cards. They were all hooked up to AOC G2460Pqu 24" 120 Hz monitors, but half were set to run at 60 Hz. We had locked the menu controls, so no one was able to check or change any monitor settings.
Each participant was allowed to game twice for 30 minutes, once on a 120 Hz system, and once on a 60 Hz system. They were not told which one was which.
The game we used for the test was Call of Duty: Black Ops II. We maxed out the quality settings. Prior to the event we of course verified that the Titan would be able to run the game consistently at 120 frames per second. It turned out that the minimum frame rate was around 140-150 fps, with the average around 200 fps. This was the reason we chose an older PC game. We disabled Vsync.
After finishing both sessions, each participant filled in a questionnaire. It contained questions such as which system provided a better gaming experience, and if they could give the correct refresh rate for each of the 12 monitors, they were eligible to win one of six AOC G2460Pqu monitors.
The lucky winners of the AOC G2460Pqu 120/144 Hz monitors.