Throttle is like when you're downloading a torrent. It would definitely can go up to your maximum speed, about 120kb/s for 1mbps line. In order for you to surf the internet while downloading torrent. I'm sure you limit the download speed to 50kb/s when you're using it and let it as maximum speed when you're not using the computer. So this is what it means with throttling, you control the maximum allowed speed for particular user when he actually able to get higher speed.