Both are almost same but as the name suggests the extra efforts put in to learn two things.. If you're planning to do masters from abroad then CSE + Bioinformatics is a great choice for you. Molecular Biology, Geonomics, Photonomics, etc are studied while doing Masters. Bioinformatics btech will have in-depth knowledge in all 4 years.

https://www.careers360.com/courses/b-tech-in-bioinformatic

https://www.careers360.com/university/vellore-institute-of-technology-vellore/btech-computer-science-and-engineering-specialization-in-bioinformatics-course

Best wishes. Thank you.