The dial-up and broadband both use modem and in some cases both connect to the telephone line. The main differences in both of these are speed and their connections. The dial-up is very slow compare to the broadband. The dial-up connection take more time to load and broadband is fast in loading.
With the broadband a person can view pictures, watch videos and play online games and with the dial-up connection this is impossible because they take very time to download information.
The broadband offers a huge difference than the dial-up system. A person who broadband then he can enjoy the benefits of fast speed and downloading.