Not to brag or anything but I think I found a better test…. The above test gives basic speed information but no real info you quality or capability of your connection. My favorite Broadband Speed Test site is ISPgeeks.com – Broadband Speed Test, Voip Diagnostics, Internet Bandwidth Forums.
Click on Broadband Diagnostics then TCP Quality Test or Speed/Cap Test and the rest is simple. They also have a true speed test, voip test (very good for testing streamed radio also) and a couple of other things.
You get data back like this (testing my connection)
Speed test statistics
Download speed: 7437424 bps
Upload speed: 1646448 bps
Download quality of service: 97 %
Upload quality of service: 95 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 76 ms
Average download pause: 3 ms
Minimum round trip time to server: 60 ms
Average round trip time to server: 61 ms
Estimated download bandwidth: 35200000bps
Route concurrency: 4.7328215
Download TCP forced idle: 77 %
Maximum route speed: 8738000bps
Plus it even gives you graphical data such as this (based on the test above).