With a GATE score of 396 and a rank of 14950 in Computer Science and Information Technology, you have a decent chance of getting into some good colleges for M.Tech.

Here are a few options to consider:

- NITs: You can try for NITs like NIT Warangal, NIT Trichy, or NIT Surathkal. While the cutoffs for these colleges can be quite high, your rank might be competitive for some of the less popular specializations.

- Central Universities: Central universities like the University of Hyderabad (UoH) or Jawaharlal Nehru University (JNU) might also be a good fit. These universities often have a more relaxed cutoff compared to the top NITs.

- Other options You can also consider other colleges like COE Pune, VJIT Mumbai, or IIITs like IIIT Allahabad or IIITDM Kancheepuram.

Keep in mind that the cutoffs for M.Tech admissions can vary greatly depending on the college, specialization, and category. It's essential to check the specific cutoffs for each college and specialization you're interested in.

To get a better idea of your chances, I recommend using a GATE college predictor tool. These tools can help you estimate your chances of getting into a particular college based on your score and rank.