OS: X 10.2.5 - 10.3
Recommended: >= 500 MHz processor with >= 256 MB RAM
Minimum: If you have a USB midi interface and some hardware synths you might get by with a 400MHz, 192MB machine. Much of the development was done on just such a machine. As with all audio applications the more speed and memory the better. If you are uncertain if your machine will work, you can try the demo version.