Another blast from the past

Once upon a time, I participated in the Internet Ray-tracing Competition. It turns out that they have an archive, and it turns out that most of the source code for my images are still there. I was able to recover another one today:

A modern render of an ancient image

My notes say that this took 6 hours to model and 1h30m45s to render on an AMD K6-2 300MHz 192MiB memory machine. The re-render at the same resolution takes 4.423 seconds on an Intel Xeon E3-1505M laptop with 32GiB memory. This is over 1200x faster. At HD resolution it takes about 13.7 seconds.