So in other words its 10 years behind the performance of the current 500th best super computer.
If the top500 list is really a good indicator, this system would have definitely made the 2004/06 list and maybe the 2004/11. You can basically build a 5 year old top 500 supercomputer today for $15k. It would have been top 10 in 1999/06. So it's 10 years from top 10 supercomputer to a personal, desktop "super"-computer but it'll probably take even less time for today's fastest machines to become affordable.
Also remember this is your personal supercomputer. It's working on your jobs 24/7. And really, 1/40th of current "super"-computer speeds for HPC testing, development and even actual relevant work really isn't that bad. You could get some serious work done of one of these boxes (or any generic box like it).