Grades have always been a point of worry for students. It is essential to know that a grade does not define who you are. Keeping this fact in mind, it is generally a good idea to keep your grade above 7.5 as it ensures that you clear the cut offs for various CGPA dependent activities such as being a part of the college fest team or placement cell or competing in the student elections. A 7.5 or above CGPA also ensures good placement opportunities as it is generally the cut off for many Tier 1 companies. While a higher grade is somewhat of an advantage, it isn't worth it if that is what you only do in your years in college. A lot of the learning happens outside class, through interacting with others, taking part in groups and basically enjoying your time here. Sometimes, if you've done something outstanding in a non-course activity, companies might even ignore a difference (like between an X.6 and an X.4). Nonetheless, it is you who decide which grade is good for you, depending on your aspirations and future plans. If you intend to go for higher studies abroad and are looking for a scholarship, chances are, you need a CGPA above 8.5.