To explain this you need to fully understand the internet and systems as you see from AKAMAI. The speed from that web site to you can be passing through a shared pipe so the highest speed is set by the slowest section of the pipe. Your connection to your ISP is at "some" speed but this does not and has never meant you get that speed from a web site.
I decline to rewrite this.
I have a similar question, but I suspect it has more to do with my network than the actual DSL.
I have a SBC home DSL line. I can run any of the online speed tests, and get good results. I generally fall
in the 500K to 600K speed range for DL & UL. However, when I actually go to a website, any website, and download a file, any type, my DL speed hovers around 78K. ( which I think is too slow) Here's the crazy part, if I pause the DL, it will re-start at a much higher speed. Initally re-starting in the MB range, then drifting downward, it will settle in the >200K range most of the time.
#1. Why would my inital DL speed not go above 78K ?
#2. Why would it go higher upon re-starting a DL?