Hello everyone, I am looking to upgrade the memory in my iMac, the iMac was the top spec iMac 27" from January 2010 - the Intel i5 4GB ram, 1TB iMac. The question I have is, to upgrade my RAM what options do I have when it comes to purchasing new RAM. Also, does any one know how many sticks of RAM the iMac will take? Lastly, is there any real benefit in maximizing my iMac to 16gb RAM? Thanks!