PS3 Resolution questions with 720p TV

hi everyone, i have a 720 bravia panel, but it also accepts 1080p and 1080i signals, my question is will i notice a difference between 1080p games and 720p games, since the TV itself is 720p

one more thing, the TV is 37 inches and i sit 2 meters away approx

If your television's native resolution is 720p then it is always best to give it a 720p input whenever possible.