In 2010, Toy Story 3 became the first theatrical release to utilize discrete 7.1 surround sound. How does it compare to 5.1? Let's find out. [post deleted by admin.] 5.1 uses the standard six channels and can go up to 192kHz. 7.1 uses two extra rear channels (thus, eight channels), and maxes out at 96kHz.That's the only real difference between the two. One is not necessarily better than the other; Christopher Nolan uses 5.1 to this day.