SMCAMDProcessor
XNU kernel extension for power management and monitoring of AMD processors. Also comes with a plugin for VirtualSMC to export readings to other applications.
Please note that this release is at very initial stage of development, make sure you have a proper backup of your EFI folder and never run on any system that matters.
Installation
SMCAMDProcessor now comes in two separate binaries(kernel extensions):
AMDRyzenCPUPowerManagement.kext
for all power management features. This kext is also required if you would like to use AMD Power Gadget.SMCAMDProcessor.kext
to publish readings to VirtualSMC, which enables macOS applications like iStat to display sensor data. This kext depends onAMDRyzenCPUPowerManagement.kext
to collect sensor data, thus must be loaded after.
- Download the kext(s) and application from Release page
- Add
AMDRyzenCPUPowerManagement.kext
to kext folder of your bootloader. - Edit your bootloader's config file to make sure the kext is enabled.
- If you're using VirtualSMC you can also load
SMCAMDProcessor.kext
to publish sensor data. - Bootloaders like
OpenCore
will link each kext in the order they present in config file, so make sureAMDRyzenCPUPowerManagement.kext
comes beforeSMCAMDProcessor.kext
as it serves as a dependency.
Experimental Features
Fan Control
Due to the amount of request an experimental feature for reading and overriding fan speed is out!
You can access this menu from menu bar "Open -> SMC Fans" or the button in Power Tool.
Features
- CPU power management for AMD 17h processors.
- Supports for reading of temperature, energy and frequency data on AMD 17h Processors.
- Manual switching of processor speed.
- PState editing.
AMD Power Gadget
Editing PState
Since the release 0.3.1, you can now edit your CPU PState using AMD Power Tool.
To access PState editor:
- Open AMD Power Tool
- Go to 'Speed' tab
- Click 'Advanced Options'
Safety Notes
- Incorrect PState setting can potentially cause permanent damage to your computer hardware.
- For safety concern, this function was limited to root user only. You can either launch AMD Power Gadget with root user or use
-amdpnopchk
to disable this check.
Tested Processors
- Ryzen 9 3900X
- Ryzen 7 3700X
- Ryzen 7 2700X
- Ryzen 5 3600
- Threadripper 2990WX
Contribution
If you want to support this project, please:
-
Give it a star! 😄
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Feel free to open up an issue if it works for you and not listed on supported processors.
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or if something breaks, please also open an issue.
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If you like to help with some coding, feel free to submit any pull request or just DM me on Discord.
Credits
- aluveitie for various enhancements and fixes.
- necross2 for adding support to temperature sensor offset.
- Shaneee for the beautiful icon.
Notes
-
I am still fairly new to macOS kernel development, this software project was initally a hobby project, and it still is, to get some reading on my newly built AMD hackintosh computer.
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With that being said, please bear with some of the spaghetti and not-idiomatic codes. Any criticism is much welcomed :)