Hey I currently have 2GB of ram installed in my 1.83ghz intel core 2 duo mac mini, now i know if i install 4GB it will only use 3GB, but will i really see and improvement with an extra 1GB? Last question, does this mac mini run its ram duel channel? so what i am getting at is that will 2gb of ram be faster if its dual channeled instead of an odd 3GB? If you don't understand that i am sorry, if not tell me and i will try to explain my questions better Cheers!!