If you try to run or install Vectorworks 2010 or later on a Mac with a PowerPC processor, you will see the following message:
Vectorworks 2010 and later do not support older Macs with PowerPC processors. This coincides with the newest Mac OSX 10.6 Snow Leopard dropping compatibility for outdated PowerPC-equipped machines. To run a modern version Vectorworks on a Mac, it will require an Intel processor.
Edited by JimW