How do we know what the native resolution of a PC game is?

You know how they say you should always play a game at the game's NATIVE resolution? for instance, resistance 2 on the ps3 should be played at 720p and that is the ONLY resolution supported as stated on the game's case. How do we know what the native resolution of a PC game is? I mean, i can play my PC games like Gears of war 1 at different resolutions, but should I always pick the highest res with a playable framerate, or should I pick the game's native res (which I dont even know how to find out).How do we know what the native resolution of a PC game is?
A GAME doesn't have a native resolution, it's the monitor that has a native resolution, if you're playing on a LCD monitor, obviously the best image quality is when playing at the monitor native res, CRTs don't have this.How do we know what the native resolution of a PC game is?
Lol, just native to your gaming monitor.

With console it's different because they fail (and no other reason, NO I WON'T LISTEN! :P )
PC games dont have native resolutions. Any resolution will yield perfect quality - unless its a pure 2D game. Then often times, the default resolution is its native resolution.
Each 3d PC game can be rendered at different resolutions.

Console games are rendered @ fixed resolution



Native for pc games is monitor max resolution,so if your monitor support lets say 1680x1050 than thats native resolution for your monitor and you should run games @that resolution for best quality
Native resolution (CRT) - irrelevant.Native Resolution (LCD) - the highest resolution available, for example mine's 1680x1050, I play all the games at this resolution but frankly even if I look careful I can't see a major difference between playing at 1440x900 or lower than playing on 1680x1050, sure there are differences but not that big. The only time I see such differences is when I see pictures, resized on the fly they look awkward.
All the newest games natively support most standard resolutions and widescreen resolutions as well. Older games might need a tweak or two to make them display properly on a widescreen.



Just like what everybody else said, playing at the native resolution pertains to the monitor you are using and not the game.