people need to remember that an amount of data is usually measured in bytes, while data rate of transfer from your ISP is misleadingly measured in bits.
you take your ISP's megabit / 8 (i think its how its done)
that's your max byte per second for downloading a file, up to with multiple files and computers sharing.
and even then, the site or game your on wont allow you to use a max speed of your choice and kick its ass on bandwidth.