So I'm just asking this question out of curiosity as to what people think: The Late 2012 and Late 2013 iMacs have their grpahics cards soldered directly to their logic boards instead of the MXM card used in previous generations. It made some sense before that iMacs used mobile chips because the MXM card is a mobile standard and with the exception of adding a large heatsink and heat pipe Apple did not change the MXM format for the iMacs. Now that they have ditched the MXM card why do you suppose they still use mobile GPUs? One of the more obvious answers is heat but I don't really buy that as the full reason. Is it more likely that nVidia and AMD (presuming AMD was at least optioned at one point) do not make a desktop card that can be soldered directly to the logic board? Or maybe they don't allow that to happen? I invite your insight and speculation... However, I also understand that there are many out there who think that Apple just makes bad decisions and expect their fans to mindlessly follow what they say. If we can now avoid those types of comments that would be great.