Having power of more than 9000 desktops. Around 23,000 hard disk drives provide a terabyte per second of disk bandwidth. How much is that? enough to transfer 126 DVD movies in just one second. Chinook can perform 163 trillion calculations per second. If you sit down with pencil and paper and do one multiplication problem per second, every second, it would take over five million years to do what Chinook can do in one second.
If want to know other technical performance capabilities you can visit SciDAC website.