You can use curl to do this: curl -L -o partial_download -C - http://path_to/partial_download This does require resume support on the server side

Wolfram Alpha is excellent at this:

Go to file > preferences then under general, the check the ‘Use 2D GPU acceleration’:

You can get some interesting information out of these if you pop then into Google Chrome: about:crash about:memory about:stats about:histograms about:dns about:version about:network about:internets about:cache