Does the i7 model have tendency to overheat, as in some older iMacs?
I've got the 3.4 GHz i7 version and use the iStat Menus 3 to keep an eye on its vital statistics. Normal CPU operating temp is in the 40-45 degree C range, occasionally getting up to 55 degrees under high load. That's pretty cool, as far as I'm concerned. The top of the iMac, while warm, isn't uncomfortably so. All in all, it seems to be a pretty cool-running machine.
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No that I have noticed so far. I have only had the machine for less than a week now and I have not noticed any heat issues. If any thing it seems to be running cooler than my last iMac, at least to the touch of the top of the machine.
I've got the 3.4GHz i7 model and the top definitely does get "uncomfortably" hot, not untouchably so but I wouldn't want to leave my hand sitting around the top-back vent.
I just got this model yesterday. Got kernel errors and the console log popping up during the first few hours after moving videos to it from my passport backup of my almost 6 yr old macbookpro. My eyes hurt after viewing. And not sure I like the new mouse It got real hot after 2.5 hours and getting tech support from a senior tech, Who is not concerned since the problem did not happen today. But to me having issues like that on day one is a bad sign. I will give it another day. Then it may be going back while I wait for another option