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MacBook Pro 2015 Temperature Problem

mo5214

macrumors member
Sep 20, 2019
68
46
from the last picture you are having something other than CPU consuming an additional 8 Watts of power while idling. I think that maybe just the retina screen. I also have similar power characteristics before I started using voltageshift to undervolt my CPU, and turn off turbo on my 2015 15".

For the record I "modded the heck out of this machine" when it comes to thermals (added vapor chamber, added thermal pads to VRMs, using back cover as heatsink, etc).

The last two pictures is how you get info as whether your nvmefix is working or not. First is smartmontool results for low power state table. 2nd is expected ioregexplorer result (you should see nvmefix)

also I noticed that during first few days when the machine is active, it will consume more power as spotlight is still indexing the system.
 

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developeralioz

macrumors member
Original poster
Oct 16, 2020
36
2
from the last picture you are having something other than CPU consuming an additional 8 Watts of power while idling. I think that maybe just the retina screen. I also have similar power characteristics before I started using voltageshift to undervolt my CPU, and turn off turbo on my 2015 15".

For the record I "modded the heck out of this machine" when it comes to thermals (added vapor chamber, added thermal pads to VRMs, using back cover as heatsink, etc).

The last two pictures is how you get info as whether your nvmefix is working or not. First is smartmontool results for low power state table. 2nd is expected ioregexplorer result (you should see nvmefix)

also I noticed that during first few days when the machine is active, it will consume more power as spotlight is still indexing the system.
Retina display uses energy in both systems. It is not caused by the 8W retina display.

I don't want to drop the voltage.

NVMeFix is working properly.

Spotlight indexing is over. I got that from the activity monitor.

There must be a solution to this damn problem. I can't put the computer on my knee. It runs very hot.
 

mo5214

macrumors member
Sep 20, 2019
68
46
Retina display uses energy in both systems. It is not caused by the 8W retina display.

I don't want to drop the voltage.

NVMeFix is working properly.

Spotlight indexing is over. I got that from the activity monitor.

There must be a solution to this damn problem. I can't put the computer on my knee. It runs very hot.
Use turboboost switcher and turn off turbo maybe.
 
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developeralioz

macrumors member
Original poster
Oct 16, 2020
36
2
Use turboboost switcher and turn off turbo maybe.

I used a turboboost switcher. There was not much difference. But there is nothing to do. I will manage for a few years until I buy the new Apple Silicon Macbook. Thanks for help.
 

mo5214

macrumors member
Sep 20, 2019
68
46
Personally I use voltageshift.kext and its controlling CLI tool.

Its pretty versatile (actually the most versatile imo)
You have options to control voltage, turbo, power limit. Even ability to write any given MSR (dont do this unless u know what you are doing)

Caveats

You would need to either build it yourself, or it, strip the signature, turnoff SIP, and add debug=0x144 to boot arguments.

from there I add voltageshift utility to sudoers file, add the key bind on BetterTouchTool to run said utility with my parameters, created launchd entry (using the utility) and add loginhooks script that calls that utility. Just to be safe (otherwise it wont run after sleep)

I recently migrated to new install of mojave (I somehow screwed with certificates and it makes an error on any browser using internal certificates)

So I dont have launchd entry anymore (never bothered to create it as I discovered that using loginhooks script+ BTT keybind works better for me)
 
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