On page 11, I mention Giga Designs, manufacturers of CPU upgrade cards for Macs. The company has apparently gone out of business, and the URL I included no longer works. Therefore, I would not recommend trying to install Leopard on a Mac that uses a Giga Designs processor upgrade, as you may have trouble getting it to work initially and will be unable to get any support in the future.

—Posted by Joe Kissell on June 24, 2008