I have a 2010 iMac 21.5 inch running a 3.6GHz dual core i5 processor (i5-680). I would like to know if it's possible to replace this i5 chip with the top-spec i7 chip from the latest 2012 iMac (the i7 3770s, 3.1GHz quad core).

I have checked the specs of these processors on the Intel site and the i7 has lower power consumption than the i5 currently in my iMac and uses the same socket, so I assume it will work in the old 2010 model (I read on another iFixit post that you cannot use a CPU with higher power consumption) but I would appreciate if anyone could tell me if there are any other potential problems I might run into.

Thanks in advance for any help!