I have a mid-2015 15’ MBP with an i7-4980HQ 2.8 Ghz CPU, running Catalina 10.15.6.
Undervolting is valuable, but only when it is part of a complete effort, and calibrated properly.
My solution is:
1 Re-paste the heat sink using Thermalright CFIII paste, using the spread around the die method of application.
2 Thoroughly clean the fans, air ducts, inside of the system.
3 Find the Max Performance/Wattage Sweet spot for my system. In my case is Power Limit to 40 Watts.
4 Find the max performance undervolt setting. In my case, under volt by -75 mV.
5 Leave the Power Limit, Turbo Boost and Performance boxes checked in Volta.
6 Make sure that “csrutil enable —without kext” is run in terminal in recovery mode so the Volta KEXT will load.
7 Set the fans in iStat Menus to ramp up at 60C, 70C, 80C and 90C to 25%, 50%, 75% and Full Tilt Boogie.
8 If you are using an external monitor (Radeon R9 M370X driving it), make certain you have the MBP closed and the “Displays have separate Spaces” from System Preferences —-> Mission Control turned to OFF (unchecked) when running Cinebench r20.
The last has to do with funky temperature throttling the OS does when both the external and internal graphics are running at the same time. I think it is sort of a system bug. Simple answer is close the lid once you are fired up.
With all of this, I get an Idle set of temps around 50 C, moderate use like typing this in the browser of ~60C and in the high 70’s when running Cinebench.
And a long reliable cpu run at full utilization and 3.0 GHz without any temp or frequency throttling.
And an easily repeatable CB score of 1439.
The process to calibrate Volta is discussed at the Russian’s YouTube:
https://youtu.be/AW5BSW3PK7c
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3 Commenti
Whats the goal here? What is your use?
Are you into video or music production, a software developer, a gamer, or just someone who wants to push the system to the wall?
da Dan
@danj I want to push the system at its maximum and want it to produce less heat. But i work on complex excel sheets, so at that moments i need some more performance.
da Hakan E
IG Models - MacBookPro11,4
DG Models - MacBookPro11,5
da Dan