@satxcanuck
Internship offers will be all over the country not just in Austin.
I have heard that A&M has some of the largest job fairs in the country. With the support of the strong Aggie Network there will be many internship offers. You have to do your part by maintaining a high GPA and participate in clubs, etc. In addition A&M offers fantastic scholarships which can easily sway decisions.
UT has a reputation for being very strong in the Computer Science and Computer Engineering areas. My older son is at UT (Electrical and Computer Engineering) and has had multiple internship offers in Chicago, Austin and Oregon. He had a similar choice, but for him UT was a better fit. Program ranking was a top criteria for him.
Maybe look at the details of the programs at both schools. Course choices and research/specialization areas.