Importance of the College GPA

Your GPA takes up literally a few millimeters on your resume, and you're not going to be spending a lot of time talking about it. It's your experience that matters Do something to set yourself apart from everyone else.

GPA and experience aren't mutually exclusive. Internships ask for your GPA and opportunities are based a large part in how well you are able to balance school work and still do well enough to impress professors. A large part of this is also how good your people skills are in sum of balancing school work and doing a healthy amount of outside of school related activities other than purely job hunting. Also, don't do something unrelated just to set yourself apart like go to Zimbabwe to take Organic Chemistry or play as a flutist in some downtown junk band, anything you need to consider twice to think whether or not it would be resume relevant is more than likely irrelevant to HR and the people looking at your resume.

Back to OP, a 3.0 and a 3.4 is a large gap. Much like a 3.4 compared to a 3.8. However a 3.0 to a 3.4 is more or less similar in that those GPAs are negligible. Employers aren't going to swoon or be impressed with anything between that range. Neither are professors or some picky job internship committees, but how that GPA matters again varies based on what job you are looking at and what company you are looking to apply towards. If you apply to J&J, B. Myers, or some other big companies (in the US) then they sometimes do ask for your transcript. However a lot of other opportunities don't and are willing to give you job related skills as long as you show that you are reliable and professional.