Hi aspirant,

You belong to SC category. Last year in seventh round of Counselling the maximum rank which was able to procure seat in Indian Institute of Technology Madras was 1712 for Ocean Engineering and 1312 for Metallurgical and Materials Engineering. Therefore, to get top branches you need to get rank below them. To be able to secure rank equal to this or less than this you need to score 80+ approximately in JEE Advanced.

Hope it helps you.