I am doing some price comparisons on RAM for my iMac. Some websites like crucial say the ram does not need to be in pairs. Other websites say the 24" imac needs pair. I do not think they do need pairs because to max the RAM out u put a 2GB and a 1GB which are not pairs. Maybe I dont understand the kits. Who is right?, Oh, I have a 2.33Ghz if that changes things from the 2.16Ghz.