Upgrading a Core Duo iMac

Is there an "economical" way to upgrade a Intel Core Duo iMac to a Core 2 Duo iMac to be able to run Lion?   I think I know what the answer is: purchase a new or refurbished Core 2 Duo iMac but I just wanted to check.  I have a Core 2 Duo MacBook Pro and thought having the iCloud available for both computers would be helpful.
Thanks for your suggestions.
Vernon

Hi Vernon,
The processors on Apple's iMacs are not upgradeable, they are part of the logic board.
Apple has some very reasonable deals on refurbs here and even new iMacs are very affordable. You can also look for good deals for used machines on CraigsList or eBay. It takes some searching to find the right deal but if you work at it you can come up with something worthwhile.
Best of luck.

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