If you talk about standard of maxing a game, then you can't go multi-monitor because it's not the standard. The standard is pretty much 1680x1050 or 1920x1080.
It should be Single Monitor
The monitor must be in native resolution, if CRT, maximum resolution.Minimum FPS
should be above Monitor Refresh Rate,
All in-game settings at maximum possible without mods
Nvidia or AMD control panel settings does not matter,
Specific resolution does not matter unless it's a contest. So you can not say " You are not maxing out BF3, you are on 1440x900" Otherwise, purchase a new monitor (possibly the model you own) and send it to them.
So in the end, Maxing out a game is usually relative to someone's specific rig. If you still wanna enforce a resolution standard, i'd say 1080p makes the most sense. However you'll be implying all lower resolutions "are deluded" Edited by Catscratch - 5/13/13 at 11:26am