With a TNEA cutoff of 155.5, you have a good chance at getting into a Computer Science Engineering (CSE) program at several reputable colleges in Chennai. Here's a list of some top options, both colleges and deemed universities:

Top Colleges/Deemed Universities (CSE):

Anna University, Chennai: This is a highly ranked public university with strong CSE programs. For CSE, a score around 190-200 is expected.

IIT Madras, Chennai: A prestigious national institute, although IITs generally have very high cutoffs, it's worth exploring if your scores are competitive.

Madras Institute of Technology, Chennai: A well-regarded institute affiliated with Anna University.

SSN College of Engineering: Known for its strong academic and research focus, SSN offers competitive CSE programs.

SRM Institute of Science and Technology, Kattankulathur: SRM is a popular choice, especially for its engineering programs.

VIT Chennai: A well-known private university with a good reputation for engineering.

CEG, Chennai: A prestigious engineering college affiliated with Anna University.

REC, Chennai: Another well-regarded private engineering college.

Important Considerations:

TNEA Cutoffs:

The TNEA (Tamil Nadu Engineering Admissions) cutoff marks can vary by branch and category. Keep an eye on the TNEA website for the most up-to-date information.

Merit-Based Admissions:

Some colleges also consider your Class 12 marks for merit-based admissions.

Research:

Explore each college's CSE program details, faculty, research opportunities, and infrastructure to make an informed decision.