I am in the second year of my Ph.D. in computational Physics I have already fulfilled the course requirement according to the university doctoral school. However, I am interested in two more courses that are being offered this semester. I am planning to take them. I mentioned these two courses to my advisor and he said that they could be helpful for my research. He said that it's up to me if I want to properly register for these courses or just sit in class without registration and learn the course content.
I am wondering what is the impact of having more than required courses on a Ph.D. transcript? I will be learning these courses in either way. If I don't register, I would not be bound to take final exams (a little relief). But if having more courses on a Ph.D. transcript shows a positive feature (for a job or postdoc position), I would not mind taking final exams.