Originally posted by strider42
Its nearly impossible that panther will be a 64 bit OS. If the 970 comes out, it will assuredly only be on the powermacs. That represents only a portio of their sales. If its a 64 bit OS, it would only run a 64 bit processor. That means it wouldn't run on the iMacs, iBooks, or powerbooks. Whats more, it wouldn't run on any machine produced earlier. Basically it would be an OS that runs on maybe 25% of the machines that would be want to run it. Does that sound like good business. What does apple do about the rest of their product line, even if they did totally abandon older (even slightly older) machines. Its absolutely unfeasible for panther to be a 64 bit OS. Its possible it could have some 64 bit optimizations, but its going to run ont he rest of product line.
A 64 bit OS requires a 64 bit processor. a 64 bit processor does not require a 64 bit OS when its backwards compatible with 32 bit.