A screenshot of the Mac OS X 10.6 Snow Leopard “System requirements” .pdf document that’s included on the Snow Leopard Developer Preview DVD shows:

System Requirements:
To install the Snow Leopard Developer Preview, you must have a Macintosh Computer with:
• An Intel processor
• An internal, external, or shared DVD drive
• At least 512 MB of RAM (additional RAM is recommended for development)
• A built-in display or a display connected to an Apple-supplied video card supported by your computer
• At least 9GB of disk space available, or 12 GB of disk space if you install the developer tools

Full article via the French-language website LogicielMac.com here.

[Thanks to MacDailyNews Readers "Marc" et "Samuel" for the heads up.]

MacDailyNews Note: For what it’s worth, these are the System requirements for the Developer Preview of Mac OS X 10.6 Snow Leopard. Theoretically, the requirements could change to include PowerPC processors in the shipping version, but the chances of that happening seem to be slim.