This is correct. You enable DSR, which makes the new resolution appear in game menus. You can then select it, and your PC will run the game at that higher resolution, then downscale it back to your monitor. Sometimes the games simply do not show the new resolution. It depends on the game including it in the resolution list in the first place. In cases like this, unless there's an engine limitation preventing high resolutions, you can enable the new resolution through ini/config files or shortcut edits. It doesn't mean that the resolution won't work properly, just that the developers never added a way to select it. Some very old games are also resolution limited, but it's pretty uncommon. Worth noting that 16:9 resolutions are more likely to be included natively in games than 16:10 resolutions. So even if a game is relatively modern and well made, you might need to set the resolution yourself. Also, some games might not like the actual act of applying the new resolution even if they'll run it perfectly. They'll show a black screen when you're supposed to get the "Confirm new setting in 15 seconds" prompt. And if only it would let you confirm it to save the new resolution and restart the game, it would work. So I find myself forcing the resolution through config files in some games even if they have it available in the menu. BTW, turning on DSR itself does nothing on its own. It just allows you to select the new resolution. If you don't actually use a higher resolution than your native one it will do nothing and affect nothing. http://www.wsgf.org/dr/left-4-dead-2 This page has instructions to force a new resolution in Left 4 Dead 2. In your case, yes, you'd want 5120 x 3200. Other games might need similar tweaks, but nothing too complicated. No matter what, you need to have DSR enabled, even if using tweaks or config files to set the resolution. As far as GeForce Experience goes I generally don't even install it. More trouble than it's worth usually. It can be useful to give some ideas about game performance though. However, the settings it autodetects are usually either way too high or way too low. Maybe it's gotten better lately but I have enough experience to not need it.