GATE score isn't only the factor that contributes to the admission process. The other factors include academics scores of 10th, 12th, graduation, and GD-PI rounds.
Two of my friends got admitted to NITIE. One among them was a general category with a 780 GATE score and the other secured a 765 score from the OBC category. It all depends on the cut-offs and waiting list conversion.
Along with the GATE scores, it's important to work hard for the group discussion and personal interview round. Also, wait for the waiting list as there can be a slight chance of selection in the waiting list.