I currently have a July 2010 27inch iMac core i3 3.2Ghz with 8 GB RAM. I have 4 2GB chips installed, my first question is, can I remove 2 of the 4 RAM sticks and replace them with 2 4GB RAM sticks purchased from OWC. Hence I will have 12GB of RAM rather than 8. Will it all work together? I am open to any other suggestions. Secondly, I am interested in purchasing a core i5 or i7 from amazon that was released the same year as my iMac (the serial numbers match), is it possible to upgrade my iMac from an i3 to an i5 or i7? Intel Core i5-760 2.8GHz 8 MB LGA1156 Processor BX80605I5760 Intel Core i5 750 Processor 2.66 GHz 8 MB LGA1156 CPU I5-750BOX Intel Core i5 Processor i5-660 3.33GHz 4 MB LGA1156 CPU, Retail BX80616I5660 Intel Core i7 950 3.06GHz 8M L3 Cache LGA1366 Desktop Processor Intel Core i7 Processor i7-960 3.20GHz 8MB LGA1366 CPU BX80601960 Intel Core i7-870 2.93GHz 8 MB LGA1156 Processor BX80605I7870 I do a lot of music recording, editing, and I simply want a beastier machine. Thanks for all yor help and suggestions.