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Processeur quad-core Intel Core i7 à 2,3 GHz, 2,6 GHz ou 2,7 GHz (Turbo Boost jusqu'à 3,7 GHz) avec 6 Mo de cache L3 partagé.

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Is my heat sink broken?

MacBook Pro 15" Retina Display Mid 2012 is getting really hot!!

In MacOS while watching YouTube or Netflix in Safari the temperature would reach 75c-87c in comparison the Late 2013 model 40c-70c, idle temperature is at 70c-80c while late 2013 model is at 40c-55c.

In BootCamp I would get lag stutter in CS:go with 100fps+ spiking down to 30fps every seconds or so. Also, I open up the MacBook to touch the heat sink the late 2013 model is really hot in the fan side of heat sink with fins as well the CPU and GPU when gaming while in the mid 2012 model is really exceptionally hot at the CPU and GPU but is cool or warm with ability to touch for 5-10 sec without issues at the Fan area with CPU temp at 90c but in the very far side of the edge of the heat sink it is cool, touching the CPU and GPU area would show really hot with instant release needed.

I have cleaned the fans and changed the thermal paste already.

idle

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Full menu

Image taken without safari closed & cold start

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(activities: open safari)

conformation fan is working and youtube in on safari in a tab with music full rpm fan @ 60c

floats around 70c-85c with image on display, without display of safari tab of youtube 64c-74c

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Répondre à cette question J'ai le même problème

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How about posting a snapshot of TG Pro main window showing all of the sensors and fans here so we can see more clearly whats going on. Ajout d'images à une question existante

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done as requested

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Can you give us the Show Main Window view Vs the Pull Down view. You'll find the option in the pull down at the bottom. If offers the Fan RPM at this point they don't appear to be running!

par

the fan does ramp up only when @ 90c for a period for cpu, smc and pram has been reset as well. I has Mac fan control set up at full rpm @ 70+ the fan is at this when I'm watching youtube/netflix

par

Trash MacFan Control! It overrides the SMC services so the set point is it On/Off no variability! Not a good app!

I've seen so many systems cooked with it! Apple does a good job with SMC services it's only when we push the system beyond what its designed to do it will fail.

Here while you are pushing your system MacFanControl is just getting in the way. TG Pro is so much better but it does cost a bit more than free for the full product.

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Yep! Looks like a bad fan.

Lets give this a try go into TG Pro Preferences and click on the Fan tab. Enable Fan Control and set for Auto Boost set to 60c save and then see if the fan goes on now when the temp is over 60c. If not your fan needs replacing.

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Fan works perfectly and is spinning as set under auto boost

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You've set it to be in light switch mode (Off/On - nothing in-between) - On when the temp has hit the threshold, off until its hit that point. If you get rid of MacFanControl you'll see it will ramp up and ramp down as needed.

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I have this same issue. Repasted it, both fans spitting out cool air out the back at 6200RPMs with Macs Fan Control. I replaced the heat sink with a used one from Ifixit, which brought the laptop some benefit as the heat gets to the near edge of the fin stacks, but no further. Do I need to get a third heat sink??

Update (10/06/24)

@danj thank you for your time! Here are some screenshots. Not even crazy CPU usage, just things like opening a tab or two or taking a screenshot will crank the temps. It gets and stays hotter than my 9,1 Unibody MBP (same i7-3615QM and GT650m) but not all the heatsink gets saturated with heat, unlike the 9,1.

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@jmac95 - Let’s get a better tool, download this app and remove MacFanControl TG Pro then take a snapshot of the apps main window and post it here. You may need to drag the slide down to capture the bottom values. Post in a new answer.

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@jmac95 - What thermal paste did you use? How did apply it.

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Believe it was Cooler Master, Corsair, or Noctua. That's 99% likely not to be the issue. There's plenty of thermal conductance from CPU to heat sink as indicated by the heat sink being burning hot to the touch from above the CPU almost to the fin stacks by the fans. At the near edge of the fins, the thermal conductivity inside the heat pipes seems to cease, as the rest of the fins are comfortably warm to the touch.

The air coming out of the fans when the computer is under load is warm only at the near edge of the heat sinks, the rest is cool.

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@jmac95 - Just dotted the I’s making sure we didn’t miss something. Sadly it looks like you got a bad one. Contact the store and point them to this question. Sadly, we are limited to used parts and it’s hard to know if a heat sink is healthy or not just looking at it.

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Welp, contacted fixit and got a replacement heat sink. Installed with Arctic Silver this time and it's still 95-98C under any load. It seems Ifixit heat pipes just don't carry heat very effectively as I'm experiencing the same symptoms with the replacement part. My personal theory is the heat pipe doesn't carry heat quickly, it heats up but doesn't transfer it effectively from point A (CPU die) to point B (end of the fin stack) and the fans, running at 6K constantly, make short work of the heat once it finally gets to the fin stacks. Because heat is not quickly diverted to the area of relatively cool metal, the laptop keeps it heat for significantly longer than the OEM-equipped 15" unibody 2012 or retina 13" 2013 and 2015 laptops I own.

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Jason lieu sera éternellement reconnaissant.
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