Hello Suresh,

For getting into IIIT Hyderabad in M.Tech depends upon branch to branch and category to category. 

I am providing you the cut-off of different branches of general category, if you belong to reserve category than there will be increase in the cut-off.

1.Bio Medical: 500

2. Bio Technology: 612

3. Chemical: 483

4. Computer science: 731

5. Civil: (a) EWRE : 630

              (b) Geo : 706

              (c) Str. : 723

6. Electrical: (a) CSP : 697

                       (b) PEPS : 744

                       (c) Micro: 762

                       (d) S&C : 710

                       (e) ML : 685

7. Mechanical: (a) TFE: 747

                            (b) MAD : 761

                            (c) IDM: 743

8.Material Science and Metallurgical Engineering: (a) CY : 432

                        (b) MT: 366

                        (c) PH: 354

                        (d) XE: 464

                        (e) PI: 766

                        (f) ME: 743

For more details you can go to below given link regarding cut off and all other related information 

https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-iit-hyderabad/amp

Hope this will help you.