Super Hot!!

[slvrscoobie]

Ever since I installed El Capitan my 2011 MBP 17" has been getting Crazy hot. (94C isnt uncommon now)
I cleaned the fans / heat sink this AM with a dyson. SMC fan control says the fans are running at 5500rpm so its not like its a bad fan or something. But its really get uncomfortably hot.
Any thoughts?

 

[g35]

My 2011 MBA base has been doing this as well. Fans on high and temp up to 36 C (94 C is a typo, right?). This wasn't happening on 10.9.5.

 

[slvrscoobie]

maybe not 90C but definitely upper 80C (according to SMC fan control)

 

[MacBird]

Definitely running warmer than with 10.10.4, but then, it's a beta.

 

[slvrscoobie]

Definitely running warmer than with 10.10.4, but then, it's a beta.

Well that I get, but usually I get 70s, not 90s!

 

[MikhailT]

Reset your SMC/PRAM, that's often the cure behind fan issues. A few people said they had to do this when they install El Cap.

If not, check Activity Monitor, is there anything forcing the CPU in sustained high performance mode?

 

[MrNomNoms]

There is definitely something wrong if you're getting to that temperature; when it is idle/basic computing stuff the CPU should be sitting at around 40-50C max.

 

[slvrscoobie]

Ill try resetting the pram.
Well its stuff like Photoshop or Finder that get activated, and it goes from a 50C up to 75-85C very quickly. The fans kick up, but it doesnt feel like much air is coming out.. I opened it up and vacuumed the heatsink, fan blades. Nothing was all that dirty, it was just in Apple HQ for a logic board replacement (GPU went) about a month ago.

maybe its not really THAT hot and its a SMC fan bug for the real temps? but its all i have to check them.

 

[BrettApple]

Low 90's isn't uncommon for MBPs to hit when under heavy load. Heck my 2008 MacBook would run around 200ºf (94ºC) playing Burnout in Boot Camp all the time. Or encoding in Handbrake.

This just means something is eating up a LOT of CPU power. Even if nothing is open it can happen, I've seen lots of crazy bugs and runaway threads in the betas. You might check activity monitor and see what's using up the CPU/Energy.

I've got a 2011 17" MBP at the office running Yosemite and it'll get warm even with both fans running on max. But only when it's running Pro Tools/LPX and exporting Final Cut/Premiere at the same time or something.

 

[Gav2k]

Ill try resetting the pram.
Well its stuff like Photoshop or Finder that get activated, and it goes from a 50C up to 75-85C very quickly. The fans kick up, but it doesnt feel like much air is coming out.. I opened it up and vacuumed the heatsink, fan blades. Nothing was all that dirty, it was just in Apple HQ for a logic board replacement (GPU went) about a month ago.

maybe its not really THAT hot and its a SMC fan bug for the real temps? but its all i have to check them.

Ah..

Can you monitor the temps with Intel power gadget and use the terminal command

yes > /dev/null &

If it's a dual core chip do the command 4 times if it's a quad core do it 8 times.

See if your processor hits and floats around 100'c. Also watch the processor speed. It should float between its base frequency and its max turbo. If it shoots up in temp and the cpu speed throttles dramatically then I'll guarantee the haven't applied thermal paste correctly.

 

[slvrscoobie]

Gets HOT with 'Photos' runnning!!

i7 quad core 2.5ghz

 

[slvrscoobie]

Well it might not be throttling the CPU to cool itself, but it does run hot. Maybe I should resink the CPU? its OOW so.

 

[slvrscoobie]

Well I took it to apple who said 'Dont worry about it!' - but i might be paraphrasing.
Basically he said 95C isn't that hot and should not be of any concern unless it's shutting down the computer.
Which is basically to me like running your car at the top notch of your coolant temp, but hey, its not in the red so dont worry about it.
Did a fresh install of Yosemite, and installed the Intel power gadget and ran a couple 'Yes' its way. I Think this graph is pretty obvious that it's throttling down the CPU to prevent overheating and then speeding up again once its 'cooled' slightly.

(specifically near the far right, you can see it spike up, flatten out, drop, spike, drop, right in line with the temp there, which tops out around 95C.

 

[slvrscoobie]

well since my ram is 3rd party, has a SSD and a super drive HDD holder, and a 4.0 BTLE card, i took that all out before I went in, and they couldnt test it. So yesterday I went back with the original ram and HDD installed. Showed them the logs and ran the 'Yes' command and let him watch the temps spike up, then throttle the CPU. He didnt even hesitate, wrote me a work order to check it out. This afternoon I checked my repair and it was 'preparing shipment for depot'. Guess someone realized I wasnt just talking outta my A$$ and decided to fix it. (hopefully)

 

[slvrscoobie]

Got it back last night with another logic board installed. This one, although it won't stay pegged at 3.6ghz, it will stay at 2.95hz and hover around 85C without further clocking down. I think it's fixed