Hello!
I'm trying to permanently disable the dGPU (NVidia GT 750M) in my late-2013 MacBook Pro Retina (A1398 820-3787-A). I can get the system to boot up using the nvram variable "fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00", and can prevent the OS from switching to the dGPU via a handful of different methods (e.g. via OpenCore + WhatEverGreen or spoofing the device properties), but the discrete chip seems to stay powered up and cause the machine to overheat. I'm hoping to accomplish something similar to this hardware modification for a 2011 MBP: https://realmacmods.com/macbook-2011...n-gpu-disable/
In that mod, the removal of one resistor (R8911) prevents the dGPU from powering up. I am curious if there's such a resistor on my own logic board that I might be able to remove for the same effect. I'm a relative layperson when it comes to such board modifications, but from looking at the boardview and schematic for 820-3787-A I think that R9301 might be what I'm after... ? Other candidates I've considered are R9300, R9210, R9211, R9623, and R8701.
Can anyone take a look at the boardview/schematic and tell me if I'm on the right track or if such a thing is even possible with this board? Any help is much appreciated. I've attached a zip of the boardview and schematic - my apologies if that is not allowed in this forum.
I'm trying to permanently disable the dGPU (NVidia GT 750M) in my late-2013 MacBook Pro Retina (A1398 820-3787-A). I can get the system to boot up using the nvram variable "fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00", and can prevent the OS from switching to the dGPU via a handful of different methods (e.g. via OpenCore + WhatEverGreen or spoofing the device properties), but the discrete chip seems to stay powered up and cause the machine to overheat. I'm hoping to accomplish something similar to this hardware modification for a 2011 MBP: https://realmacmods.com/macbook-2011...n-gpu-disable/
In that mod, the removal of one resistor (R8911) prevents the dGPU from powering up. I am curious if there's such a resistor on my own logic board that I might be able to remove for the same effect. I'm a relative layperson when it comes to such board modifications, but from looking at the boardview and schematic for 820-3787-A I think that R9301 might be what I'm after... ? Other candidates I've considered are R9300, R9210, R9211, R9623, and R8701.
Can anyone take a look at the boardview/schematic and tell me if I'm on the right track or if such a thing is even possible with this board? Any help is much appreciated. I've attached a zip of the boardview and schematic - my apologies if that is not allowed in this forum.
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