- Jul 21, 2011
- Zbook G5 17"
- AMD WX-4170
I installed my P4200 graphics card on the G5 notebook, and then the CPU power consumption in MAC OS is limited to 23W. I think this is a BIOS mechanism judgment. There is a unique display that prioritizes the power consumption to the graphics card, although the graphics card does not work. I hope you can work out a new EFI OC boot as soon as possible, and let the notebook BIOS determine that there is no independent display installed, so that the 8750H can run at full power consumption.
Ok figured out the way to remove the power limiter.
Something (I suspect the EC) is enabling the limiter at boot and after wake, so I did a replace patch on a Method that executes after this happens.
After the patch:
The patch now correctly works from boot and after wake from sleep.
It disables the extra power limiter that is enabled by default in Hybrid/Auto/Discrete GPU mode.
The way my patch works is it replaces the platform RDSS Method and in my new version, The Method XMXX is executed at the end of RDSS. In the Method XMXX I change the SystemMemory at offset 0xFED159A0 to remove and lock the power limiter.
With some adjusting, this patch could be used for other laptops that have a similar power limiter enabled.
Use at your own risk
This patch does the same thing that Throttlestop does, and all other power limits are still in place (Battery, Thermal, etc...)
Credit for offset/settings & Throttlestop: unclewebb