Chosen Solution

can it be done?

The CPU is integrated into the logic board. The 1.83 iMacs can be upgraded as they have ziff sockets. If your doing this just for Lion we can get you to question where it’s being tried. I’m trying myself both on straight Core Duo and CPU upgraded machines. There are problems and we’re noting them. Read over this question for some of the things we’ve found so far: OS Lion is available for download and this one: Will Macs upgraded to Core2Duo Processors work with Lion?