Undervolting i9 MBP.

mario.jr

macrumors member
Original poster
Aug 4, 2010
48
2
Hi.
Has anyone able to undervolt a 2018 i9/i7 MBP using Volta?
I tried to run on mine, but it does not look like to work. :(

Regards!
 

DeanPSN

macrumors regular
May 21, 2018
223
150
Dublin, Ireland
I think Apple will further improve the new MacBooks through software updates.
From what i see online the heat between all the i7's and i9 is more or less the same.
I've seen recently a video comparing the i7 2.6ghz and the i9 actually had better battery since it doesn't need to turbo as much as the i7's. I will try to find the video on YouTube.

Anyway, i'm planing to replace the stock thermal paste with Thermal Grizzly Kryonaut on my next day off for my own peace of mind, since Apple applies the paste like ****.
 

DeanPSN

macrumors regular
May 21, 2018
223
150
Dublin, Ireland
Voiding a warranty on a laptop the price tag of a used car should not be called peace of mind...
Not really voiding anything.
I work in this field and they won't notice it was ever opened + i'm OCD AF .
I did this with my previous MBPs and never had an issue going for warranty. (Keyboards, lcd delamination, speakers and so on)
 

magbarn

macrumors 68020
Oct 25, 2008
2,341
1,426
Undervolting does not work on post 2015 Macs.
Yup, Apple locked them down somehow. Even bootcamp won't allow it either with Throttlestop or the Intel app. I also have a MSI GS65 4+ lbs gaming laptop with 1070 Max-Q and 6 core i7. It would throttle until I drop the voltages by 125mV. It dropped the CPU temps by almost 10 degrees...
 

mario.jr

macrumors member
Original poster
Aug 4, 2010
48
2
Yup, Apple locked them down somehow. Even bootcamp won't allow it either with Throttlestop or the Intel app. I also have a MSI GS65 4+ lbs gaming laptop with 1070 Max-Q and 6 core i7. It would throttle until I drop the voltages by 125mV. It dropped the CPU temps by almost 10 degrees...
I do it on my windows machines via throttlestop :(
Sad news :(
Thanks for the reply
 

Meldalinn

macrumors member
May 26, 2016
66
71
Yup, Apple locked them down somehow. Even bootcamp won't allow it either with Throttlestop or the Intel app. I also have a MSI GS65 4+ lbs gaming laptop with 1070 Max-Q and 6 core i7. It would throttle until I drop the voltages by 125mV. It dropped the CPU temps by almost 10 degrees...
Have you tried to do it with SIP disabled?
 

maflynn

Moderator
Staff member
May 3, 2009
66,778
33,727
Boston
I thought you had undervolted yours?
I used Volta to limit the wattage, not undervolt. While the app allows the slider on the voltage I saw no change in performance of voltage. Change the wattage was successful, and the temps and benchmarks bore that out. However I noticed after the second supplemental update, the laptop was running a lot cooler then it was beforehand. So much so, I'm not even using that app until I'm doing something that is causing a lot of heat. So far my tasks are such that I'm seeing 50c normally and 80c in LR which I can live with.
 
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