Hey guys, I see plenty of threads but none really pointing towards what I am looking for. I have also reviewed some spec documents but cannot find what I am looking for. By reading below, you will see this is not your typical "my mac is overheating! post." This is more of a "I don't know what, or why, my system is doing what it is doing" post. Bit of a long post, hope it makes sense. My writing is terrible, my apologies. In general I am wondering, what exactly are the terms for a macbook to "overheat", what is "overheating", what defines "turbo boost", what defines "fans being on". This all creates a bunch of unanswered questions for me and below is why. I understand there are multiple factors but it seems they are hidden. I have contact intel and was told because Apple can change certain specs, intel has no idea how Apple uses the CPU. I have gone to apple for answers but they are a bit clueless (the people I spoke to). I inquired about heat and was told "the macbook will shutdown before it gets too hot" when I asked how hot this was, they could not answer. When I said how hot my macbook got, they said it needs to go in for repairs right away. When I got it back they said it was normal. Aka, they have no idea what the norm is. Anyways, I have a 2012 MBP running latest mavericks. I have 8gb ram and an I7 2.9ghz turbo boost to 3.6ghz. What I test: I run Intel Power Gadget, Istat, Bresink temp monitor, to find out what is going on with my computer. While playing something intensive, such as Diablo 3, I notice the turbo boost is constantly running. That is, my CPU Frequency is above 2.9ghz. Now, my average temperature is about 100 degrees celcius and I hit 104. The DTS can only record up to the Tjmax which is 105 celcius. Intel recommends FULL cooling power before the Tjmax, and for an example they say 10. However, it seems apple is inconsistent with full cooling as I constantly get fans not running at full even when at 104 celcius. Sometimes they run at full tilt at 100 celcius. There is no correlation. Is turbo boost being activated improperly? After several reboots and running the game and monitoring, only sometimes will turbo boost not kick in, most of the time it is always on. A difference in processing? I have played with game settings, all on min, all at high. In both cases and everything in-between, I always get average 100 celcius, and turbo boost kicking in. What if I turn turbo boost off? With turbo boost off, I get a steady temperature that is 90-100 celcius. I have no lag or experience any set back from not having turbo boost in game. I can still run at full settings AND run cooler than with turbo boost on with the minimal settings in game. What is plimit? I keep getting plimit notifications in my console while testing my temperature. My understanding this is the power threshold when the CPU maxes out. It is just a notification and the OS decides what to do. I am unsure what this means exactly but thought I would include it. So, from the above, you can see I cannot make sense of what is going on. Why is my machine running just as good with turbo boost off, but yet runs cooler? Why are the fans not kicking in all the time when hot, or not running full throttle when borderline on the Tjmax. What exactly does apple do about the Tjmax? Some say the computer shuts down, but from what I can tell this is not the case. Since the DTS can only detect up to the Tjmax, I have no idea how hot my CPU actually gets. the CPU PECI sensor also seems to only report 104. My understanding is this can go higher but I am not sure how it is done (or even if my computer is hotter than that). Now, Apples warranty dictates no preventative maintenance needs to be done on the MacBooks. Also, when I inquired about thermal paste, apple told me it last forever and never needs to be changed. I have never heard of this. This leads to another question, how does one know if thermal paste needs to be replaced? Is there documentation that states apple knows it may need to be replaced? According to what I have been told, they only change the paste if the CPU has been taken off for some reason such as replacement. How does one know if there system is even cooling properly, if apple cannot tell you what cooling properly means. In summary my questions are: 1) What truly happens as MacBooks CPU approaches Tjmax 2) How can one know Tjmax was hit 3) Can a macbook run near Tjmax 24/7 and not degrade (apple says it won't degrade) 4) Is there any reliable way of knowing how or why turbo boost is kicking in 5) Is there any reliable way of knowing how or why the fans are at the speed they are at 6) can thermal paste last forever 7) how would one know when to replace thermal paste 8) how could one prove thermal paste needs to be replaced under warranty, if apple will not even look at that as an option 9) How is it, turbo boost being off can run cooler and at the same quality, than with turbo boost on? 10) Why is it, if having turbo boost on and off makes no performance difference, but yet it creates more heat, would turbo boost be activating when it does not to be? 11) Why would turbo boost be on for extended periods of time when it does not to be? Again, i can run with it off and get the same performance but run cooler. So I could run with turbo boost on at 100-104 celcius fans blaring, or turn turbo boost off and get 90-100 celcius with moderate fans. 12) In example 11, will either case make your laptop burn out quicker, or last longer? 13) When will a macbook shutdown if too hot? How hot is too hot? How is this determined? 14) Does anyone know someone whose macbook shut down because it was too hot? I have no heard or read of this yet. That is all, thank you.