As expected, Mac OS X 10.7 Lion will require an Intel Core 2 Duo processor (or better, such as the i3/5/7 series or Xeon chips) and 2 GB of RAM for a compliant install when it ships this summer. This is consistent with the requirements from earlier builds of the OS.
Judging by our Twitter inquiries, however, there is a good bit of confusion over the difference between "Core 2 Duo" (which is supported) and "Core Duo" (which is not). Here's the simple rule: Did you purchase your Mac (new) after December 2007? It's probably OK for Lion, although it might need more RAM.
Core 2 Duo proce
