I have a late 2012 mini and its running quite warm to the touch at the moment. I have iStat menus running and it currently says the CPU cores are 81 and 83 and the CPU die is 83, this is in celsius. The mini is driving 3x23" LCD monitors and is connected to an external USB 3 enclosure with 4 drives. I have a number of programs open and out of the 8GB of RAM it says I have 2.73 free at the moment. I am not doing anything cpu intensive so not sure why its running so warm, if this is indeed considered warm.