Hello learner,

As per TNEA 2020 cut off, it is good to have decent cut off of 170+. And the cut off marks will not be the same for all the colleges. It'll vary accordingly as per its ranking. If you desire to get an admission in one of the top ranking colleges, at the minimum you must have 185+. Again your Category comes as a big picture. The cut off marks will vary in the descending order as per this criterion. General Category/OC/BC/SC/ST.

To hedge one's bets, in addition to your cut-off marks of 185+ it is  appreciable to have a decent TNEA rank.

Good Luck!