Mac OS X 10.6 (Snow Leopard / Leopard) specifications seen at Moscone center reveals the following requirements:
1. Intel processor
2. Internal, external or shared DVD drive
3. At least 512 MB of RAM (additional RAM recommended for development)
4. A built-in display or a display connected to an Apple-supplied video card supported by your computer
5. At least 9 GB of disk space available, or 12 GB of disk space if you install developer tools.
Source: MacNN

Full article (78 words) »