Is it possible to replace the processor from 2.4GHz to 3.06GHz?

According to Mactracker the two iMacs have the same logic board system bus (1066mhz) so if the processors form factor are identical the 3.06Ghz should fit.

"I'm 90% certain that the heatsinks are not the same size. I don't have one in front of me at the moment, though.

Since you already bought the processor, just try to install it with the 20-inch heatsink. The only potential drawback would be firmware incompatibilities. iMacs aren't meant to be upgraded... so I don't know if your 20-inch logic board will be able to use the new processor properly."

If it fits there shouldn't be an issue. I would not bother replacing with such little upgrade in speed. Go ahead and try but you won't notice much of an increase in performance.

"I just bought one of them on ebay with Intel core 2 Duo 2GHz IMac A1224

according to Google processor look like that:

http://www.computerclinicliverpool.co.uk...

2 months ago I was repairing (don't laugh I know it is boring PC) my dell laptop so I striped my laptop down and I can remember that there was the same processor T7200.

Anyone know if I can take processor form faulty laptop with high clock and put it to my imac ?"