Hi guys, I've ordered a Retina iMac which is estimated to arrive early next week. I chose the 8GB option as I don't want to pay the price Apple asks for their 32GB option. Although, I am going to buy seperate 32 GB RAM sticks, but I do have one question: I read a post here about 1866 MHz RAM sticks working with the new Retina iMac, although I can't seem to find the post any longer. If I'd go with 1866 MHz RAM, would that damage my computer in anyway? Do they get hotter than normal 1600 MHz RAM? I chose the high end Retina iMac (everything maxed except RAM) and I've heard that the GPU does reach high temperatures. I don't want to further increase the temperature. If the 1866 MHz RAM doesn't do any harm; could you recommend me any specific 1886 MHz RAM? Otherwise, which 1600 MHz would you recommend?