I currently have 8GB of RAM (2x2 from apple, 2x2 third party) installed in my 2011 iMac. At the moment I don't do anything too heavy with the system but I'm building toward it more and more. I have noticed that After Effects rendering is a bit slow but never thought anything of it. Until today that is. I read a post stating that to get use of all 4 of the i7 cores you need 16GB of RAM. I'm not really sure of the logic behind this but basic math tells me that if this is the case I'm only using half of my processing power when rendering which would account for the long render times. What I'm wondering is if anyone could confirm this information and, if so, could someone offer a reason why this is the case? I know a decent amount about computers but haven't looked too far into stuff like this so I don't know exactly how it all works. I just want to try and get the most out of my system.